I think the Gibbs oil is at the bottom of that list Brent. I think it is marketed well, but I don't use it. JMO. I have always been a Valvoline user, and on flat tappet break ins, I still use Brad Penn (Kendall for us old guys). This Amsoil just really surprised and impressed me. When I read that we had to use it at EMC, I thought.....okay.......hoping it would work. I came away from there after cutting two filters, looking at what I drained out three times, and looking at my bearings at the teardown with intent to use it more.