I am going to do my first oil change on a Corvette C8. It calls for a Dex-r 0w- 40 Mobil 1 “supercar” which are not that expensive and come in lots of six. However, if you need individual qts,, they are like 25 bucks… Go figure… I have one quart unopened, and 6 quarts on the way. It takes 7.5 with a new filter. For that other half quart that I may need to put in, can I mix in PUP 0W 40 without any problems? I know this sounds paranoid, but I thought I’d ask… My guess is it won’t hurt a thing.