I have found LOTS of valvoline all climate, 5w30 and 10w30 SL formula, in a mom and pops parts store. I was going ot buy some, but a guy htier said, dont get that, he didnt say why. He knew i was a good customer, and siad ot buy his Amilie, pennzoil mobile or castrol SM formulas instead. The bottles of valvoline, did have a notcible amount of dust build up on them. Think the oil in them, is still any good?