Recommended for high RPM 2-stroke applications Recommended for power valve engines Identifiable Klotz red color and racy scent Improves throttle response Extreme film strength protects engine parts from metal-to-metal contact Clean BurnÖ for low smoke and prevents plug fouling High temperature stability reduces power valve deposits Blends with gasoline only Pre-mix only - not intended for oil injection Made in the U.S.A.. R-50 SYNTHETIC 16 OZ.