Poll: Which FULLy synthetic oil do you use?

[TheSilkySmooth]

Originally Posted by 1stToyota

Amsoil does have API certification. Like I said, it's only on their XL series, which is API on every XL grade, and XL is ACEA A1/B1, and like I also said, it's group III. I posted the link from their site where it states they went group III to keep it competitive, pricewise, so they could offer API approved oil to the market. I think I did see a blue topped 10w30, and yes, it wasn't certified, and not group III, good for 25K, guessing A4/B4.

Ahh gotcha on the XL. I wasnt looking at the grpiii so I didnt read into it much. Here is a question I'm not fully clear on: Does Toyota warranty require API cert or is this just a recommendation/guidance? I'm assuming the emission warranty requires the use of low saps so you have to stay with an SL/SM rating. But certification IDK ....