QR Code Link to This Post Racing Motor Oil---for Porsche, Jeep, or air cooled Motorcycle high RPM protection. $4.00/Quart. 20?50 viscosity. Exceeds API-SL service grade requirements. If you sometimes or frequently run at high RPM's, in hot temperatures with A/C ? Extra protection in case of overheating/weak radiator. Good for high mileage cars, bikes, with worn bearings, rings, valves. Quiets slight knock/vibration. Very smooth, quiet, cool oil, especially with Jeeps, or cars with A/C on high. $4.00 each is less than 1/2 price. Brand New, never opened. quarts. Summer coming soon. Call now.