I'm going to guess that their isn't such a solution. Like you said, we don't know what the blenders are adding in. So if there is such a solution, you don't know what is in that solution or how it would react. I think it's a good bet that say, M1 0w-20 has the same additives as 5w-30 or 10w-40?
Originally Posted By: ExMachina
How do we know the additives in the 0w-20 don't clash with the additives in the heavier oil? Even in the same brands, we don't know what blenders are adding in. Can you think of a straight petroleum solution, over the counter, halfway ez to get?
Originally Posted By: MolaKule
There you go, a sensible, simple answer.
Originally Posted By: zach1900
Drain a qt out and add the same brand of oil back in , in a 0w20-0w30 flavor.