I have a bottle of Castrol GTX 5w-20. I asked a friend if I could have it because he wasn't going to use it. It's full, but it had been opened prior to me receiving it. I looked in it, and it looks like motor oil, but it has a strange smell. If you mixed poop and mints/menthol, it would have the same smell this oil does. I've never used castrol so I don't know what it usually smells like. Pennzoil certainly doesn't smell like that!
It's API SM, made in 2010. What are your thoughts?
It's API SM, made in 2010. What are your thoughts?