2-Cycle Engine FAQs
Royal Purple’s HP 2-C is the 2-cycle oil we recommend for pre-mix use in 2-stroke engines. Our HP 2-C synthetic engine oil will deliver a noticeable improvement in performance, whether you’re using it for your motorcycle, outboard or chainsaw.
Royal Purple HP 2-C is recommended for warm weather, stock oil-injection applications.
HP 2-C will work just fine in temperatures that are regularly above 20°F. For optimal performance, however, and to guard against poor oil pumpability, we recommend Royal Purple Snow 2-C for cold temperature, oil-injected applications.
No. Royal Purple’s 2-cycle synthetic engine oils are formulated for use in gasoline and low alcohol gasoline blends (pump gasoline) applications only.
Royal Purple HP 2-C is the same exact formulation as the older RP 2-cycle TCW III named product, there has been absolutely no changes except for the name change. Our RP TCW III and HP 2-C 2 cycle products have always and still are an ashless formulation that meets all of the performance requirements and definitions of physical properties of the NMMA TCW 3 license. With that said, these oils do not carry the NMMA TCW 3 license.