new (not really) oil from mobil 1, 0w-30 and 0w-20

[TheSilkySmooth]

Originally Posted by craigq

I'm only posting this and nothing else. If your car is under warranty still and can't make up your mind about an oil just stick with whatever oil is recommended on your oil cap/in your owner's manual:


It's linked to on stickied TSB thread
It's on Etimago's website
There's a couple running rampant on Yaris World

+1 on this comment. The TSB says the new Toyota recommended oil is ILSAC GF4 NOT that its OK to use 5w-20 in an engine spec'd for 5w-30. See the BOLD NOTICE at the top of the TSB. It says to use what is on the cap and in your manual. What the TSB means is if you have a 5w20 oil cap and manual spec you can use ILSAC GF4 oil instead of GF3 without reservation (given GF4 is "eco friendly" with a lessened % of phosphorous and zinc anti wear agents, commonly called ZDDP or by penzoil in the past, Z7. Tried 5w-20, went around the block, and the engine was so noisy I thought it would explode before I got it back home.