Join Date: Sep 2007
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I doubt it makes any difference at all.
People love their brand oil.
If you want to go longer between changes, run synthetic, although it will cost you more to do so.
Whydo I say the brand/type of oil makes no difference?
My son had a camry (4 cylinder) that was owned by a series of students who did not bother to change the oil or check the level of it, or change the coolant, tended to get drunk and run off the road, etc.
When we got rid of it, it had 250,000 MILES on it, it did not smoke, burn oil or leak, and the next student is still driving it (and crashing).
I am sure when it did get oil changes, they were NOT synthetic...
No matter what oil you use, you are not going to wear out an engine.
The rest of the rav will likely fail way before the engine.