When no additive is used, lead oxide is formed. Some white deposits may be seen on the plugs and in the exhaust pipe during use this is normal with RunUp since the lead in the fuel is being converted to non conductive lead phosphate. Lycoming clone users have reported very good results when using this product. This can be increased to a maximum of 2 ounces per gallon for problem engines.ĭecalin RunUp is not approved for use in the engines of certified aircraft but it has the same active ingredient, Tri Cresyl Phosphate as our previous product. The dosage of 1/2 ounce per ten gallons of fuel is a minimum. Make sure you remove and clean your oxygen sensor every 20 hours to remove these lead phosphate deposits when using Decalin RunUp. Users can expect the same level of engine cleanliness when using this fuel and Decalin RunUp as they saw with 100LL. Decalin RunUp contains two types of additive, one to reduce the negative effects of tetraethyl lead in aviation fuel and the other to improve the combustion efficiency, reduce combustion deposits and clean the fuel delivery system in aircraft. Decalin RunUp is approved for use with the new 100VLL (Very Low Lead) fuel announced by the FAA on Special Airworthiness Bulletin NE-11-55.
