Gasoline or diesel. Hi-Performance Lucas Oil Products Inc. Helps start stubborn engines. Lucas Oil Sure Start Premium Starting Fluid is 50% ether blend, more than the leading national brand. Helps start stubborn engines fast in cold weather. Saves batteries. Contains upper cylinder lubricant. Performs to -65 degrees F. For Use In: Passenger cars. Diesel engines. Lawn mower. Chainsaws. Outboard motors.