It ain't just CAFE.
Improved fuel economy is always desirable, at least to some of us.
As engines and oils have developed, thinner grades can provide enough protection to enable long engine life.
I really doubt that Toyota reduced its engine life targets to allow the use of 0W-8. Rather, the oil itself has improved as has the detail design of the engine and its lubrication system.
Improved fuel economy is always desirable, at least to some of us.
As engines and oils have developed, thinner grades can provide enough protection to enable long engine life.
I really doubt that Toyota reduced its engine life targets to allow the use of 0W-8. Rather, the oil itself has improved as has the detail design of the engine and its lubrication system.