I get my oil done at a shop here in conroe. And the owner is a toyota specialist. Well I know i hear a lot about it. But its 20w50... I know already. But he says because of the hot weather and the type of car I should use that weight.. I told him that if anything happens to my motor because of the weight of the oil and his professional suggestion he will pay for it. He agrees but i am looking forward to 10w40 or 30.