I just found this website today. I hope to get alot of questions answered. I use Extreme hydraulic oil in all applications where trans and hydraulic are common. This is on JD and CaseIH tractors from 85 to 200 hp. I assumed since the label states that the Extreme meets Hytran and JD(Hyguard) specs that it is as good. I would appreciate some comments and opinions on this brand. I am trying to adopt an oil analysis regime on used oil. I never thought about testing clean oil until reading some posts on here. You folks are serious about your oil! Me too, I just never knew how to get the facts and compare different brands.