The OP asked about Amsoil Dominator which very unlike Amsoil Sabre is a tolerably decent oil. Dominator has been around for years and is recommended for use at more normal mix ratios than Sabre. Dominator doesn't produce the hard, almost plated on carbon like Sabre does. If there were no other choices I could live with Dominator oil though in my opinion there are much more suitable oils to choose from. These days I'm a Red Line guy and after seeing the internals of several engines, I see no reason to look to any other oil choice.