HELP!! Transmission problems 1500 Ram
From : silly sam
Q: synthetics do not need the viscosity modifier additives that conventional oils need. its these additives that are winding up building up on valve trains. on fri 17 sep 2004 194511 gmt trey treydog90spam@hotmail.com wrote i read an article out of an old old popular science from the 50s or 60s. it was compairing conventionals to synthetics. i believe they performed the same offered similar protection however when they took the engines apart the oil pan and the valve covers had a lot of build up where the synthetic was all clean. mind you im sure they had different standards for oil 50 years ago im sure conventional oil is a lot better now. karl childers wrote hmm. i read an article in consumer reports about motor oil a few years back. they tested nyc cabs. they put synthetic in some regular oil in others. some they ran 7500 miles others 3000 and 5000 miles before changing the oil. there was no discernable difference in engine wear in any of them. i use chevron 5w-30 from costco. i think as long as it is api certified or whatever that little starburst signifies and you change it on time it doesnt make much difference. i change mine every 5k. easier to remember. my 2 cents your mileage may vary. subject mobil 1 vs. valvoline is there really a difference between motor oils dodge says use 5-30 in the 4.7l dak; i used castrol in the neon but switched to valvoline when i got the truck i notice a lot of folks using mobil 1 at least in their posts and was curious to know why. j. .