Aftermarket Air Cleaners
From : jimbo
Q: i own a 2006 dodge ram 2500 mega cab powered by the hemi. i bought it new and the dealers parts manager mentioned that installing aftermarket air cleaners on my rig would void the warrenty. they specificly mentioned the k&n line. i was thinking about installing a different air cleaner setup to improve gas mileage. does anyone know if what the parts manager said is true will it void my warrenty and has anyone installed a different air cleaner setup on their truck and did improve your mileage thank you. jim .
Replies:
From : miles
snoman wrote i disagree. if a k&n is not approved it can void warranty. many gm owners have found out the hard way when the oil on the k&n fouled maf sensor and it required replacement and they were charged for it under warranty. if challanged the burden of proof is on the auto maker to prove that the filter caused the damage. i do agree that it very well could have but the engine warranty is not instantly voided for all claims because of use of a k&n filter. the damage has to be proven to have been caused as a direct result of the filter. that said i would never put a k&n in any auto i own especially since i live where its quite dusty. .
From : bdk
jamesfick@comcast.net says... i own a 2006 dodge ram 2500 mega cab powered by the hemi. i bought it new and the dealers parts manager mentioned that installing aftermarket air cleaners on my rig would void the warrenty. they specificly mentioned the k&n line. i was thinking about installing a different air cleaner setup to improve gas mileage. does anyone know if what the parts manager said is true will it void my warrenty and has anyone installed a different air cleaner setup on their truck and did improve your mileage thank you. jim funny i ran k&ns on several vehicles over a 25 year period and not once was anything mentioned about voiding any warranty. one of these an 88 s10 blazer was still the 4.3 engine was anyway running fine in 2004 when after two thefts and trashings one sideswipe from a flatbed truck a wreck and over 250000 miles on it the friend of mine who bought it from me retired it and sold it to a scrapyard. the tranny was slipping badly and the transfer case had died and you couldnt hardly move it so it was time. it had cancer so badly it left a pile of rust and scale if it was parked for more than a half hour. it had the same k&n filter on it until 2000 when it fell apart and was replaced with a paper one from then on.. i never really noticed any real gas milage improvement it did sound a lot better though and it ran a little better too. bdk .
From : miles
snoman wrote x amount of fuel must be consumed to provide enough energy to power vehicle down the road and no aircleaner will change that as modern engine controls will keep mixture correct so the air cleaner will not change this either. if more air enters then dont those controls adjust the mixture to match are you saying it makes no difference how restrictive or not restrictive an air intake is improvements to air intakes can improve performance or mpg but i do agree that a simple drop in filter isnt going to accomplish that. .
From : miles
azwiley1 wrote i agree with tom and i do wish that this is a point that everyone would listen too. a properly cleaned and maintained oil wetted fillter will not should not cause any issues with the maf. i have one on my truck have had it for over a year i clean it and oil it properly per the makers instructions and have never had an issue with my maf or anything else. add to this that i live in az which is always dusty. every single person i know who lives in az who has tested their oil pre and post k&n has reported higher silicates after switching to the k&n. thats why i refuse to use them. there are other similar filters that do a better job such as napa or wix. k&n just has the marketing power! .
From : tbone
snoman wrote x amount of fuel must be consumed to provide enough energy to power vehicle down the road and no aircleaner will change that as modern engine controls will keep mixture correct so the air cleaner will not change this either. if more air enters then dont those controls adjust the mixture to match are you saying it makes no difference how restrictive or not restrictive an air intake is improvements to air intakes can improve performance or mpg but i do agree that a simple drop in filter isnt going to accomplish that. what he is saying is that if the air filter allows more air the system will inject more fuel to keep the mixture the same so while you may produce more power at a given throttle position it will not improve efficiency and therefore no improvement in mileage. changes to the air intake can improve efficiency which would improve mileage as well. -- if at first you dont succeed youre not cut out for skydiving .
From : tbone
you disagree! i expected you to be the expert read this was that towards me or sno* i was wondering that myself. hey tom my truck has produced an error code p1294 which translates into an overly high idle. i am thinking that the iac is acting up since i have yet to ever touch that tb. do you have any ideas before i start tearing things apart. it also has a bad o2 sensor drivers side that is going to be replaced as soon as i have time. damn things are expensive. -- if at first you dont succeed youre not cut out for skydiving .
From : big al
miles nope@nopers.com wrote they cant just void it simply because of the filter. wrong! just try them. the dealership or the manufacturer steve was at tucson dodge when a gal brought in her husbands 1500. they scanned it and found an after market chip. told her no warranty and quoted some completely outrageous price to repair it. they brought it in for a transmission problem. think it was a 4.7. all i heard was her talking to her husband on her cell phone so i dont know the complete story. they were not happy. al .
From : big al
you disagree! i expected you to be the expert read this was that towards me or sno* more or less it was just info. but sno was right about chevy at least. the repair for the maf is about $700. the dealer must replace the air filter and other removed hardware clean the air inlet and replace the maf. as far as i know not very far does not void the truck warranty. back in the day when i worked for chrysler they would photograph cars at the drag strip. and they definitely canceled the warranties. al .
From : big al
snoman wrote x amount of fuel must be consumed to provide enough energy to power vehicle down the road and no aircleaner will change that as modern engine controls will keep mixture correct so the air cleaner will not change this either. if more air enters then dont those controls adjust the mixture to match are you saying it makes no difference how restrictive or not restrictive an air intake is improvements to air intakes can improve performance or mpg but i do agree that a simple drop in filter isnt going to accomplish that. thats how i interpreted it too. so lets just block the air filter to get better mileage no air = no fuel. has to get better mileage al .
From : steve b
steve b wrote miles nope@nopers.com wrote they cant just void it simply because of the filter. wrong! just try them. the dealership or the manufacturer i have. any dealer can refuse work if they so desire. it does not make them right. take it to arbitration or court. if the filter is not the cause of the problem then the warranty is still valid. sorry son. im not the one you have to convince. tell it to the judge or the service manager. steve .
From : steve b
snoman wrote x amount of fuel must be consumed to provide enough energy to power vehicle down the road and no aircleaner will change that as modern engine controls will keep mixture correct so the air cleaner will not change this either. if more air enters then dont those controls adjust the mixture to match are you saying it makes no difference how restrictive or not restrictive an air intake is improvements to air intakes can improve performance or mpg but i do agree that a simple drop in filter isnt going to accomplish that. thats how i interpreted it too. so lets just block the air filter to get better mileage no air = no fuel. has to get better mileage al well hell then the next logical step is to do what we did in the sixties and take the air cleaner off all together. right steve .
From : miles
steve b wrote sorry son. im not the one you have to convince. tell it to the judge or the service manager. not sure what your issue is then. ive heard manufactures and dealers deny a claim for just about any and every reason or no reason at all. theres lousy dealers and lousy manufactures. are they right the point is they cant legally deny a warranty claim unless the added part caused the problem. if they do then they are in breach of contract. .
From : miles
tbone wrote what he is saying is that if the air filter allows more air the system will inject more fuel to keep the mixture the same so while you may produce more power at a given throttle position it will not improve efficiency and therefore no improvement in mileage. changes to the air intake can improve efficiency which would improve mileage as well. great. then well choke the air off which results in less fuel being used same mixture and no change in mpg right .
From : tom lawrence
thats how i interpreted it too. so lets just block the air filter to get better mileage no air = no fuel. has to get better mileage youve just discovered the working theory behind the amazing tornado fuel-economizer! .
From : tom lawrence
sorry son. im not the one you have to convince. tell it to the judge or the service manager. i have before as well. ive told the story here before but in a nutshell a dealership tried to deny me warranty service on a leaking oilpan gasket by saying nah you put a lift kit on the truck - the warrantys void. that lasted all of about 30 seconds as i explained to him the meaning behind the magnusson-moss warranty improvement act and said that if was trying to violate a federal law then we were going to have problems... .... the gasket was repaired under warranty and later on i also had a cracked head replaced under warranty which was another back-and-forth battle but thats a different story. so obviously my warranty didnt get voided even though it was threatened. .
From : steve b
miles nope@nopers.com wrote they cant just void it simply because of the filter. wrong! just try them. the dealership or the manufacturer steve .
From : miles
steve b wrote miles nope@nopers.com wrote they cant just void it simply because of the filter. wrong! just try them. the dealership or the manufacturer i have. any dealer can refuse work if they so desire. it does not make them right. take it to arbitration or court. if the filter is not the cause of the problem then the warranty is still valid. .
From : miles
jimbo wrote i own a 2006 dodge ram 2500 mega cab powered by the hemi. i bought it new and the dealers parts manager mentioned that installing aftermarket air cleaners on my rig would void the warrenty. they specificly mentioned the k&n line. i was thinking about installing a different air cleaner setup to improve gas mileage. does anyone know if what the parts manager said is true will it void my warrenty and has anyone installed a different air cleaner setup on their truck and did improve your mileage many aftermarket filters allow too much dirt through them despite their claims. thats why it could void the engine warranty. however the burden of proof would be on the auto manufacture to prove that damage was caused by the filter. possibly with oil tests showing increased silicates from dirt. they cant just void it simply because of the filter. .
From : jimbo
many aftermarket filters allow too much dirt through them despite their claims. thats why it could void the engine warranty. however the burden of proof would be on the auto manufacture to prove that damage was caused by the filter. possibly with oil tests showing increased silicates from dirt. they cant just void it simply because of the filter. thank you for the info miles. .
From : azwiley1
on apr 5 1002 am tom lawrence tnloaswpraemnmcie...@earthlink.net wrote i disagree. if a k&n is not approved it can void warranty. lets be careful with the terms here. presence of an aftermarket filter will not void a warranty. thats something done at the corporate level and means that the manufacturer will no longer provide any warranty support regardless of the problem. by law they can not do that simply due to the existance of an aftermarket part. in general warranties can only be voided for odometer tampering emissions tampering or abuse and is stated as such in your warranty booklet. what can happen is that the dealership will refuse warranty service on a particular claim because the aftermarket item caused or contributed to the problem. in this case a fouled maf sensor would not be covered under warranty because very likely an over-oiled filter fouled the sensor and caused the problem in the first place. however that same vehicle would still be eligible for warranty service on anything else that was not caused by the aftermarket filter. of course now you open yourself up to some debate as to whether or not your aftermarket piece was a factor in any subsequent failure i agree with tom and i do wish that this is a point that everyone would listen too. a properly cleaned and maintained oil wetted fillter will not should not cause any issues with the maf. i have one on my truck have had it for over a year i clean it and oil it properly per the makers instructions and have never had an issue with my maf or anything else. add to this that i live in az which is always dusty. now before anyone starts with the didnt you just replace your cats yes i did due to miliage 180k on the odometer that happens with age and miliage and is not related to my use of an oil wetted filter. .
From : tom lawrence
i was wondering that myself. hey tom my truck has produced an error code p1294 which translates into an overly high idle. i am thinking that the iac is acting up since i have yet to ever touch that tb. do you have any ideas before i start tearing things apart. it also has a bad o2 sensor drivers side that is going to be replaced as soon as i have time. damn things are expensive. yep... just recently helped a buddy replace one of his o2 sensors on his 00 durango. he was having all kinds of drivability problems once his engine warmed up... engine stumbling wanting to stall... mashing the gas cleared it up funny - only seemed to act up when in closed loop . funny thing was no codes were ever set. we changed his upstream o2 sensor on a hunch and hes been trouble-free since. $80 or so but at least it cured the problem. on your high idle yeah - id suspect the iac first and foremost. pull it out and soak the pintle end in some good carbon cleaner. i remember several years back someone did a test of various fuel injector cleaners and whatnot and found that gumout regane honey-colored not the clear stuff worked just a bit better than techron and far better than any of the other off-the-shelf products he found. i know mopar combustion cleaner does a hell of a job inside the cylinder - just dont know how well it would work sans heat. the simple visual test for the iac motor is to pull it out of the tb leave the wiring connected and turn the ignition to on. the pintle should move smoothly from all the way out to all the way in then settle back to almost all the way out again. any hesitation indicates gunk in the works. if it doesnt get better after a soaking theyre only about $40 or so. rock auto sells a standard motor replacement for $38 http//info.rockauto.com/smp/smpdetail3.htmlac68.html of course while youre at it its never a bad idea to pull the whole tb remove the other pieces tps switch and map sensor and give it a good bath as well. .
From : azwiley1
encourage this guy and help him out why dont you do the same instead of debateing how hard or easy it is to do! jamie .
From : steve b
on apr 5 522 pm miles n...@nopers.com wrote azwiley1 wrote i agree with tom and i do wish that this is a point that everyone would listen too. a properly cleaned and maintained oil wetted fillter will not should not cause any issues with the maf. i have one on my truck have had it for over a year i clean it and oil it properly per the makers instructions and have never had an issue with my maf or anything else. add to this that i live in az which is always dusty. every single person i know who lives in az who has tested their oil pre and post k&n has reported higher silicates after switching to the k&n. thats why i refuse to use them. there are other similar filters that do a better job such as napa or wix. k&n just has the marketing power! i cant dispute or disclaim that miles i am not running a k$n brand oil-wetted filter. all i can say is that with the filter i use properly maintained i have not had an issue. i check the maf/mas every month when i pull the filter check the t-body every other unless something indicated i need to. .
From : snoman
on 5 apr 2007 062457 -0700 jimbo jamesfick@comcast.net wrote many aftermarket filters allow too much dirt through them despite their claims. thats why it could void the engine warranty. however the burden of proof would be on the auto manufacture to prove that damage was caused by the filter. possibly with oil tests showing increased silicates from dirt. they cant just void it simply because of the filter. thank you for the info miles. i disagree. if a k&n is not approved it can void warranty. many gm owners have found out the hard way when the oil on the k&n fouled maf sensor and it required replacement and they were charged for it under warranty. it is also well documented that the very slight increase in airflow is achieved with less filtering. another myth is this mpg thing. a engine is driven by the heat of expanding gas from combustion as this expanding gas drives pistons down to turn crank. this heat comes from the btu content of the fuel. x amount of fuel must be consumed to provide enough energy to power vehicle down the road and no aircleaner will change that as modern engine controls will keep mixture correct so the air cleaner will not change this either. power gains with a k&n are more a state of mind than reality but john q. public wants to beleive in magic add on cures and k&n laughs all the way to the bank. ----------------- thesnoman.com .
From : big al
on 5 apr 2007 062457 -0700 jimbo jamesfick@comcast.net wrote many aftermarket filters allow too much dirt through them despite their claims. thats why it could void the engine warranty. however the burden of proof would be on the auto manufacture to prove that damage was caused by the filter. possibly with oil tests showing increased silicates from dirt. they cant just void it simply because of the filter. thank you for the info miles. i disagree. if a k&n is not approved it can void warranty. many gm owners have found out the hard way when the oil on the k&n fouled maf sensor and it required replacement and they were charged for it under warranty. up to this point he is 100% correct. its the oil that ruins the maf. keep the stock filter. al .
From : tom lawrence
i disagree. if a k&n is not approved it can void warranty. lets be careful with the terms here. presence of an aftermarket filter will not void a warranty. thats something done at the corporate level and means that the manufacturer will no longer provide any warranty support regardless of the problem. by law they can not do that simply due to the existance of an aftermarket part. in general warranties can only be voided for odometer tampering emissions tampering or abuse and is stated as such in your warranty booklet. what can happen is that the dealership will refuse warranty service on a particular claim because the aftermarket item caused or contributed to the problem. in this case a fouled maf sensor would not be covered under warranty because very likely an over-oiled filter fouled the sensor and caused the problem in the first place. however that same vehicle would still be eligible for warranty service on anything else that was not caused by the aftermarket filter. of course now you open yourself up to some debate as to whether or not your aftermarket piece was a factor in any subsequent failure .
From : frank boettcher
on 5 apr 2007 060124 -0700 jimbo jamesfick@comcast.net wrote i own a 2006 dodge ram 2500 mega cab powered by the hemi. i bought it new and the dealers parts manager mentioned that installing aftermarket air cleaners on my rig would void the warrenty. they specificly mentioned the k&n line. i was thinking about installing a different air cleaner setup to improve gas mileage. does anyone know if what the parts manager said is true will it void my warrenty and has anyone installed a different air cleaner setup on their truck and did improve your mileage thank you. jim warranty cant be voided for installing an aftermarket air filter. if that is the case no air filter would qualify for replacement except oem. and as for damage toyota offers the borla system as a factory option. system includes a borla high flow exhaust and a borla badged high flow intake which surprisingly looks exactly like the k & n. i suspect that k & n private labels it for borla. think they are going to void my warranty i have a k & n on my dakota but have not checked the mileage. .
From : tom lawrence
you disagree! i expected you to be the expert read this was that towards me or sno* .
From : azwiley1
on apr 5 324 pm tom lawrence tnloaswpraemnmcie...@earthlink.net wrote you disagree! i expected you to be the expert read this was that towards me or sno* i think it was pointed at sno* tom... .
From : azwiley1
on apr 5 601 am jimbo jamesf...@comcast.net wrote i own a 2006 dodge ram 2500 mega cab powered by the hemi. i bought it new and the dealers parts manager mentioned that installing aftermarket air cleaners on my rig would void the warrenty. they specificly mentioned the k&n line. i was thinking about installing a different air cleaner setup to improve gas mileage. does anyone know if what the parts manager said is true will it void my warrenty and has anyone installed a different air cleaner setup on their truck and did improve your mileage thank you. jim jim i would not recommend that you buy it from the dealer simply because of cost and mark up. there are so many companies out there that sell them cheaper. try some of the following sites www.truckperformance.com www.desertrat.com www.4wheelparts.com as to a specific brand from the write ups and reviews i have seen the volant systems seems to be one of the best ones out there. as to an increase in fuel economy filter alone i could not tell you but with the cai and the free flowing exhaust i have gained some but i really could not tell you how much. .
From : big al
i disagree. if a k&n is not approved it can void warranty. you disagree! i expected you to be the expert read this info - automatic transmission shift engine driveability concerns or service engine soon ses light on as a result of the use of an excessively/over-oiled aftermarket reusable air filter #04-07-30-013a - jan 25 2005 automatic transmission shift engine driveability concerns or service engine soon ses light on as a result of the use of an excessively/ over- oiled aftermarket reusable air filter 2005 and prior gm cars and light duty trucks 2005 and prior saturn models 2003-2005 hummer h2 this bulletin is being revised to add additional model years and to clarify warranty coverage. please discard corporate bulletin number 04-07-30-013 section 07 -- transmission/transaxle. do this first inspect the vehicle for a reusable aftermarket excessively over- oiled air filter dont do this do not repair maf sensors under warranty if concerns result from the use of an excessively/over-oiled aftermarket reusable air filter. the use of an excessively/over-oiled aftermarket reusable air filter may result in . service engine soon ses light on . transmission shift concerns slipping and damaged clutches or bands . engine driveability concerns poor acceleration from a stop limited engine rpm range the oil that is used on these air filter elements may be transferred onto the mass air flow maf sensor causing contamination of the sensor. as a result the grams per second gps signal from the maf may be low and any or all of the concerns listed above may occur. when servicing a vehicle with any of these concerns be sure to check for the presence of an aftermarket reusable excessively/over- oiled air filter. the maf gps reading should be compared to a like vehicle with an oem air box and filter under the same driving conditions to verify the concern. the use of an aftermarket reusable air filter does not void the vehicles warranty. if an aftermarket reusable air filter is used technicians should inspect the maf sensor element and the air induction hose for contamination of oil prior to making warranty repairs. transmission or engine driveability concerns related to the maf sensor being contaminated with oil that are the result of the use of an aftermarket reusable excessively/over-oiled air filter are not considered to be warrantable repair items. .
From : miles
azwiley1 wrote i cant dispute or disclaim that miles i am not running a k$n brand oil-wetted filter. all i can say is that with the filter i use properly maintained i have not had an issue. i check the maf/mas every month when i pull the filter check the t-body every other unless something indicated i need to. what brand of filter are you using as ive seen there are some decent cleanable reusable filters available. k&n just isnt one of them. even the better ones did not show any appreciable gains in performance or mpg but they did filter well. is yours in conjuction with a cai if so that could be benificial as the rams at least on mine has a rather restrictive intake duct. .
From : beekeep
on 5 apr 2007 153041 -0700 azwiley1 azwiley1@cox.net wrote again i would like to point out to everyone the phrase that most seem to conveniently over look concerning this issue. it is in big als post multiple times and that is excessively over oiled!!!!!!!!!!!!! a oil wetted filter that is properly maintained cleaned and oiled will not likely result in any of the mentioned problems. youre overlooking the little oil good lots of oil better mentality. beekeep .
From : azwiley1
yes it is in conjunction with a cai and a very free flowing exhaust 3 dynomax bullet like you said a filter alone would not likely provide any gains and i think that if it did it would be so negilable that you wouldnt even notice it. like the ram the chevy has a very restrictive oe air flow system the air tube going from the maf to the t-body is really wired looking. it has air channels to hold air in and quite down the noise i am running a set up from afe. not the greatest one out there but the price was right. now if i keep the chevy i will get rid of this one and put on a volant cai as everything i read about them leads me to believe that they are one of the best ones out there. azwiley1 wrote i cant dispute or disclaim that miles i am not running a k$n brand oil-wetted filter. all i can say is that with the filter i use properly maintained i have not had an issue. i check the maf/mas every month when i pull the filter check the t-body every other unless something indicated i need to. what brand of filter are you using as ive seen there are some decent cleanable reusable filters available. k&n just isnt one of them. even the better ones did not show any appreciable gains in performance or mpg but they did filter well. is yours in conjuction with a cai if so that could be benificial as the rams at least on mine has a rather restrictive intake duct. .
From : tbone
tbone wrote great. then well choke the air off which results in less fuel being used same mixture and no change in mpg right up to a point that would be pretty much correct. lol figures youd think such! i dont think so miles i know so and if you knew 1/000000000000 as much as you act like you do you would as well. -- if at first you dont succeed youre not cut out for skydiving .
From : tbone
tbone wrote i dont think so miles i know so and if you knew 1/000000000000 as much as you act like you do you would as well. i can see it now. tbone invents a new gadget thats even better than the magnet or tornado. a device that restricts air intake in order to improve mpg. lemme know when this invention comes out! lol perhaps you should actually follow the thread or even just pay attention to what you yourself say. where exactly did i say restricting air intake would improve mileage all i said that restriction to a point would not decrease it. btw i see you had no response to the circuit city thread. why is that miles -- if at first you dont succeed youre not cut out for skydiving .
From : tbone
tbone wrote what he is saying is that if the air filter allows more air the system will inject more fuel to keep the mixture the same so while you may produce more power at a given throttle position it will not improve efficiency and therefore no improvement in mileage. changes to the air intake can improve efficiency which would improve mileage as well. great. then well choke the air off which results in less fuel being used same mixture and no change in mpg right up to a point that would be pretty much correct. -- if at first you dont succeed youre not cut out for skydiving .
From : miles
tbone wrote great. then well choke the air off which results in less fuel being used same mixture and no change in mpg right up to a point that would be pretty much correct. lol figures youd think such! .
From : miles
tbone wrote i dont think so miles i know so and if you knew 1/000000000000 as much as you act like you do you would as well. i can see it now. tbone invents a new gadget thats even better than the magnet or tornado. a device that restricts air intake in order to improve mpg. lemme know when this invention comes out! .
From : miles
tbone wrote i see you had no response to the circuit city thread. why is that miles because i never read that thread sounds to me like youre wanting an argument where none exists. rather typical of you! ill give you a clue i havent shopped at circuit city in a decade. try not to make assumptions for which you have no clue but wish to argue about anyways. fiy my company used to have about 14 direct competitors in the usa. 10 have gone over seas. 30% of our sales is overseas and we must compete against them where they enjoy cheap labor. that said were staying here and have publicly stated were not going anywhere. stop trying to argue and assume what you have no clue about. .
From : tbone
tbone wrote i see you had no response to the circuit city thread. why is that miles because i never read that thread sounds to me like youre wanting an argument where none exists. rather typical of you! ill give you a clue i havent shopped at circuit city in a decade. try not to make assumptions for which you have no clue but wish to argue about anyways. damn miles take a chill pill. i didnt accuse you of anything. i was just curious as to why you had no input. fiy my company used to have about 14 direct competitors in the usa. 10 have gone over seas. 30% of our sales is overseas and we must compete against them where they enjoy cheap labor. that said were staying here and have publicly stated were not going anywhere. stop trying to argue and assume what you have no clue about. and what exactly is your point -- if at first you dont succeed youre not cut out for skydiving .
From : miles
tbone wrote damn miles take a chill pill. i didnt accuse you of anything. i was just curious as to why you had no input. hmm...out of all the topics going on here you out of the blue ask why no input on a single particular one just being chatty huh .
From : azwiley1
on apr 5 307 pm big al s...@qwest.net wrote i disagree. if a k&n is not approved it can void warranty. you disagree! i expected you to be the expert read this info - automatic transmission shift engine driveability concerns or service engine soon ses light on as a result of the use of an excessively/over-oiled aftermarket reusable air filter #04-07-30-013a - jan 25 2005 automatic transmission shift engine driveability concerns or service engine soon ses light on as a result of the use of an excessively/ over- oiled aftermarket reusable air filter 2005 and prior gm cars and light duty trucks 2005 and prior saturn models 2003-2005 hummer h2 this bulletin is being revised to add additional model years and to clarify warranty coverage. please discard corporate bulletin number 04-07-30-013 section 07 -- transmission/transaxle. do this first inspect the vehicle for a reusable aftermarket excessively over- oiled air filter dont do this do not repair maf sensors under warranty if concerns result from the use of an excessively/over-oiled aftermarket reusable air filter. the use of an excessively/over-oiled aftermarket reusable air filter may result in . service engine soon ses light on . transmission shift concerns slipping and damaged clutches or bands . engine driveability concerns poor acceleration from a stop limited engine rpm range the oil that is used on these air filter elements may be transferred onto the mass air flow maf sensor causing contamination of the sensor. as a result the grams per second gps signal from the maf may be low and any or all of the concerns listed above may occur. when servicing a vehicle with any of these concerns be sure to check for the presence of an aftermarket reusable excessively/over- oiled air filter. the maf gps reading should be compared to a like vehicle with an oem air box and filter under the same driving conditions to verify the concern. the use of an aftermarket reusable air filter does not void the vehicles warranty. if an aftermarket reusable air filter is used technicians should inspect the maf sensor element and the air induction hose for contamination of oil prior to making warranty repairs. transmission or engine driveability concerns related to the maf sensor being contaminated with oil that are the result of the use of an aftermarket reusable excessively/over-oiled air filter are not considered to be warrantable repair items. again i would like to point out to everyone the phrase that most seem to conveniently over look concerning this issue. it is in big als post multiple times and that is excessively over oiled!!!!!!!!!!!!! a oil wetted filter that is properly maintained cleaned and oiled will not likely result in any of the mentioned problems. .