But what kind of cooking oil? Canola? Peanut? Sesame? Vegetable? Original? Grapeseed? Olive? Halal? Kosher? In answer to OP, 5-30w or 10-30w will work with the Aurion fine. It is not an Aurion but i use Mobil 1. Thanx for the suggestion about using cooking oil guys. Actually, I searched and read the previous thread. But I did not find 10w-30 in Mobil 1 official website and there are two types of mobil1 5w-30; one is just 5w-30,the other one is esp 5w-30. what's the difference.