Lucas safeguard ethanol fuel conditioner with stabilizers was developed to specifically address issues associated with using ethanol based fuels. This applies to E-10, E-15, E-85, pure ethanol and any mixtures in between including gasoline. Lucas Product is completely soluble in all ethanol fuels and will not harm filters. Lucas safeguard ethanol fuel conditioner with stabilizers contains effective additives to prevent rust and corrosion associated with the use of ethanol fuels. Safeguard treats up to 80 gallon (302.8) of ethanol fuel. One Oz. treats five gallon of ethanol fuel. New 5.25 pound bottle treats up to 25 gallon (94.6 liters) of ethanol fuel. Recommended for use in automobile and marine applications.