What's your explanation for lifter/canshaft failures in Stalantis/Ford/GM/Toyota?
What have they ALL changed other than the operating temp side of the oil for economy?
0w-?? Are the same weight oil, they only differ at high temps.
Oil weights refer to the viscosity of motor oil, which indicates how thick or thin the oil is at different temperatures. The numbers on oil labels, such as 5W-30, show how the oil performs in cold conditions (the first number) and...
The thing is they already got the "mileage " rating when certified, I don't believe it effects Cafe now after the consumer takes possession. But I could be mistaken