The way that ultra-low sulfur diesel (ULSD) gels up faster due to its lower lubricity and higher cloud and pour point compared to regular diesel presents a challenge to users. Bio-Buddy is a conditioner and anti-gel that can be used to treat ULSD used in any diesel engine, including multifuel heaters, oil furnaces, cars, trucks, tractors, boats and heavy equipment. U.S.A. Bio-Buddy complies with the federal low sulfur content requirements for use in nonroad diesel engines and diesel motor vehicles 128 oz. bottle treats up to 5 gallons of fuel