COMBO - Fuel blending for all Nitro Model Engines Model Engines After Run Oil (Engine LIFE Plus Oil) 1. Fuel Blending for Nitro Model Engines-CASTOR OIL (100%) Vol. 6.5 fl.oz (100 ml.) Adding one bottle (100 ml.) oil to 1 Gallon of Commercial nitro RC Engine Fuel you can safely increase performance of your car nitro engine by allowing to adjust leaner mixture setting in optimal temperature range of 210º - 250? F (98? - 128? C) at higher RPM. 2. Model engine after run oil -Engine Life Plus Oil ***It is not a simple basic lubrication oil.*** Engine LIFE PLUS OIL is excellent protection for your Nitro Engine against oil gunk and corrosion. Improves engine performance, cleans and lubricates, helps extend engine life and protect your investment. Put 2-3 drops to carburetor stuck, remove engine glow plug and put 2-3 drops in of Engine Life Plus Oil, turn the engine over 2-3 times and you are fully protected. Bottle size: 3.25 fl.oz (50 ml.) Engine Life Plus Oil should be used any time your engine will sit for more than a week. ***** Add more power and Life to your Nitro Model Engine ***** NOT FOR MEDICINAL USE !!