The OIL thread.

[Sinfix_15]

So my car is a 2000 and I waited ten months for my next oil change. Did I hurt anything? My dealer didn't say anything about what your saying. I guess you never can trust a salesman.

What kind of car and mileage? there's really no way to tell you a solid answer without a tests, i can make an assumption... but the only way to know is a test. Lets say you had a 2010 Honda accord.... it would be safe to assume your Honda engine is running pristine and not leaking any coolant or fuel into your oil, knowing that your oil is not contaminated, i could confidently say yes, your amsoil would go 10k miles easily. Flip that script and use a 98 Cavalier as your example vehicle.... fuel could pass the rings, may have a small coolant leak ect ect that can contaminate the oil. These are all things that a $35 UOA can tell you in specific detail. Based on the information you got back from the UOA, you could then decide what oil is best for you. Lets say your car had elevated fuel levels in the oil shortening it's lifespan, then you might decide that a cheaper oil and more frequent changes was a better route for you.

Hell, I've been using the Rotella T6 for a long time..and before that, the regular Rotella 15/40 in my old cars. I also only use Mazda OE filters. Only recently had people on the forum I hang out a lot on, MiataTurbo, did people start doing a bunch of oil analysis and proving the T6 is tits and comes back with superb results. Personally I think Mobil1 is a big scam. Somehow or another they're indoctrined so many people to believe it is the end-all best oil on the market. I've tried to spread the word about Rotella for years.

Yeah, rotella is fantastic oil. What sucks is that people are usually trying to do the right thing by buying the expensive, well advertised oil at the store.... but the best option isnt always the most expensive one.