Over the years, CASTOR OIL has proven to be one of the most effective lubricants for glow model airplane engines. Castor Oil lubricates and protects your engines over a wide range of operating conditions, including the extreme high temperatures that an over-lean needle valve setting can cause. Use straight or blend 50-50 with a synthetic oil like KLOTZ KL-200 RACING LUBRICANT.
NOTE: If you are using a brand of fuel that is short on oil, you can add 5 oz. of castor oil to 1 gallon of fuel to raise the fuel's total oil content approx. 3%.