I read somewhere that Tuxing is recommending Mobil 1. Sadly I can't find the post or any further information.
I had royal purple, it was horrible, switched to something else, works much better. Can't remember the name off hand, old timers. Oh yeah Seco-Lube, works great, no smoke and stays cleaner way longer.The want hydaulic oil not motor oil! Buy royal purple syn ISO 100
Oh I did, it was what was recommended though. I discovered quickly that it was bad. SecoLube is for HPA's 10 hrs and still nice and clean but I'm changing it anyway.Chemlube 751 if you have royal purple throw it away not ment for HPA