Mobil: https://mobiloil.com/en/article/why-the-...3&WT.srch=1
Pennzoil: http://www.pennzoil.com/en_us/education/know-your-oil/what-you-need-to-know-about-api-sn-plus.html
Quaker State: http://www.quakerstate.com/en_us/car-care/what-you-need-to-know-about-api-sn-plus.html
I was not able to find a listing of Castrol and Valvoline products that are API SN Plus compatible.
From the Mobil and Shell links, it appears that compatibility will be limited to their synthetic blend or full synthetic products. So, does this mean that API SN Plus makes conventional oil obsolete?
Pennzoil: http://www.pennzoil.com/en_us/education/know-your-oil/what-you-need-to-know-about-api-sn-plus.html
Quaker State: http://www.quakerstate.com/en_us/car-care/what-you-need-to-know-about-api-sn-plus.html
I was not able to find a listing of Castrol and Valvoline products that are API SN Plus compatible.
From the Mobil and Shell links, it appears that compatibility will be limited to their synthetic blend or full synthetic products. So, does this mean that API SN Plus makes conventional oil obsolete?