Buris Hi-Rev Caster, formulated with the purest, degummed castor oil available. Southern California club racer's choice. Also known as Burris "Red". Castor oil is a natural extreme pressure lubricant, which results in extended engine life. Blended with the most advanced additives to eliminate ring sticking and sparkplug fouling , reduce carbon & varnish formation, and protect against rust & corrosion. The ideal lubricant for gasoline, alcohol and nitro fuels. Hi-Rev Castor also makes a great TOP end lube for engines that run on "GAS, METHANOL, AND NITRO"