Someone local has some sealed oil containers on Marketplace. I was intrigued by some 0w20 acDelco that says it’s a synthetic blend and meets dexos. He has a few for 5$ (cad) a quart. Anything I can find about acDelco 0w20 calls it full synthetic. Wouldn’t mind grabbing them to add to whatever 5l jug I buy for my Tacoma. I’m guessing they’re fairly old though? Appreciate any info you guys may have and thanks in advance! (Side note what’s Quakerstate 4x4? Maybe I’ll grab that just to have something vintage on the shelf)