Combo - Fuel blending for all COX Model Engines and Engine Life Plus Oil Model Engines After Run Oil 1. Fuel blending for all COX Model Engines - CASTOR OIL (100%)Vol. 6.5 fl.oz ( 100 ml. ) COX recommends: DO NOT run Cox Engines on Synthetic Oil ONLY Fuel ! COX Fuel Mix containing:20% Castor Oil or mix10% Castor Oil and 10% Synthetic Oil ***** NOT FOR MEDICINAL USE !! 2. High Quality Engine LIFE PLUS OIL Engine LIFE PLUS OIL is excellent protection for your Nitro Engine against castor oil gunk and corrosion. Improves engine performance, cleans and lubricates, helps extend engine life and protect your investment. Put 2-3 drops to carburettor 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. For COX and any nitro 2 or 4 stroke engine. 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. What you see on pictures is what you get. NOT FOR MEDICINAL USE !!