Racing oils provide more wear protection than motor oils for passenger vehicles, however, these products contain fewer detergents and are not suitable for street use
Details:

• Sold as 1 Quart
• Reformulated for improved frictional properties
• Special detergents for improved lubricity and less detonation
• Polyol ester base stocks provide more stability and film strength when exposed to excess fuel dilution
• Each of these products has no less than 2200ppm of zinc and phosphorus for anti wear
• Each race oil product is a multi-grade, offering 2-4 percent more power than oil of a similar viscosity 20WT is a 5W20, 30WT is a 10W30, 40WT is a 15W40, 50WT is a 15W50
• Improved protection at startup, lower oil temp, cleanliness
• Remember to change these oils more frequently than regular motor oils
• Used in applications with wider bearing clearances
• Popular with sprint and midget applications on methanol offers less frequent oil changes due to less fuel dilution
• Phosphorus, Avg PPM 2450
• Zinc, Avg PPM 2400
• SAE Viscosity Grade 15W50
• Vis at 100 degrees C, CSt 19.2
• Vis at 40 degrees C, CSt 135
• Viscosity Index 141
• CCS Viscosity, Poise, at degrees C 35 at neg 15 degrees C
• Pour Point, degrees C neg 45
• Pour Point, degrees F neg 49
• NOACK Evaporation Loss,1hr at 482 degrees F (250 degrees C), percent 6