Balance a qt of asm 0w-20 from my previous oil change. Am looking at a slightly thicker vicosity oil atm 10w-30. Is it Ok to blend 3qt of ATM with 0.5qt of ASM.
doubt very seriously that you would have a problem. Same brand mixing usually dont have a problem. Lots of people mix leftover quarts of different brands (gtx, pennzoil, supertech) and car runs just fine
