Mobil 1 0W20 vs Toyota 0W20
Resurrecting an old thread to the original topic with some interesting info. This guy, 540Rat is an oil guru. I read through a lot of his blog, it’s very long and comprehensive. He actually *tests* motor oils, instead of analyzing them, and ranks them. If you read his blog you will be enlightened. To get to the rankings go to the site and search for “Wear Protection Ranking List”. At about the 24th search instance you will find the list.
540 RAT - Tech Facts, NOT Myths
Of interest to 5th Gen owners there is another tabulation of 0W20 oils that he tested.
Search for “Eight 0W20 Oils Tested and Compared” to get to that list. What’s interesting is that (after Amsoil 0W20 Signature Series) the top three are:
1. 0W20 Quaker State Ultimate Durability, API SN, synthetic (gold bottle) = 124,393 psi
Its onset of Thermal Breakdown = 270*F
2. 0W20 Toyota Motor Oil, API SN, synthetic = 101,460 psi
Its onset of Thermal Breakdown = 255*F
3. 0W20 Mobil 1 Extended Performance, API SN, dexos 1 approved, synthetic = 100,229 psi
Its onset of Thermal Breakdown = 265*F
So you can see that although Mobil1 EP and Toyota are both great oils they are not the same.