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

[1stToyota]

Originally Posted by Yaris Hilton

They didn't change their primary recommendation of 5W-30. They just said it's OK to use 5W-20 (which thins out more as it gets hot.)

5W-20 isn't any better in cold weather than 5W-30. They have the same viscosity at 0°F. The 5W-20 thins out more at 210°F than the 5W-30 does.

I use Pennzoil Platinum and found it odd that their 5w-20 had an ACEA rating of A1/B1, but their 5w30 is ACEA rated at A5/B5, which BTW is equal to the Amsoil High Performance 5w30 that I used to use, except the PP gets API approval.