Here is the Information on oils from
http://www.hawayaracing.com/Lubricants.htm
ROYAL PURPLE "9" RACING OIL - 9' is an ultra-light viscosity racing motor oil formulated for motorcycle and small to medium displacement car engines. An excellent drag racing motor oil and performance proven in road race motorcycle engines. A Drag Racers Oil of Choice. Don't pre-stage without it! Available in quart bottles and 5-gallon pails Viscosity typical of a OW10 Oil.
ROYAL PURPLE "11" RACING OIL - 11' is a light viscosity racing motor oil formulated to withstand exotic fuels including NO2. Designed for the small displacement motors. Performs wellin a methanol environment. A versatile race oil. Available in quart bottles and 5-gallon pails. Viscosity typical of a 5W30 Oil.
ROYAL PURPLE "21" RACING OIL - 21' is the choice of NASCAR and late model dirt car teams. A horsepower and torque generating race motor oil which has unparalleled wear characteristics. '21' is and has been used in USAC, WoO, NHRA, IHRA, NASCAR and many other sanctions of car and motorcycle engines. Available in quart bottles and 5-gallon pails. Viscosity typical of a 5W30 Oil.
ROYAL PURPLE "41" RACING OIL - 41' is designed for marine inboard, endurance car racing and street hot rod motors. Capable of withstanding long intervals of extreme heat. The high performance motor oil of choice for the uncompromising street rod enthusiast. Available in quart bottles and 5 gallon pails Viscosity typical of a 10W40 Oil.
ROYAL PURPLE "NITRO PLUS" RACING OIL - NITRO PLUS formulated to withstand the stripping, shearing and emulsificabon effect Nitro-Methane fuel has on other oils. The Ultimate racing motor oil for exotic fuels. NITRO PLUS - Don't Stage Without It. Available in 5-gallon pails.
ROYAL PURPLE "2-CYCLE" RACING OIL - A clean burning, horsepower making two-cycle racing oil. For high-powered injected racing engines. Outstanding performance qualities, including better wear characteristics, cleaner motors and more power. Available in quart bottles and 5-gallon pails.
ROYAL PURPLE "2-CYCLE" OEM OIL - A clean burning, TCWIII two-cycle premix or injector oil. a recreational two-cycle oil with exceptional film strength. Using Royal Purple 2-C TCWIII Oil results in cleaner motors, more power, and less fuel consumption. Available in quart bottles and 5-gallon pails.
"MAX-GEAR" GEAR OIL - MAX-GEAR reduces frictional wear and subsequent heat using an impact absorbing, non-shearing molecular structure suitable for both high performance and OEM applications. MAX-GEAR will withstand the high temperatures experienced in race and cross country driving environments. Available in quart bottles and 5-gallon pails.