Blue, 32 oz, diesel anti-gel, fuel additive that contains not only cold flow improver to protect fuel from gelling, but contains cetane for better cold starts & injector cleaner to clean critical engine parts, lowers cold filter plugging point by as much as 30 degrees fahrenheit, pour point by as much as 40 degrees fahrenheit, prevents fuel gelling in low temperatures & contains wax anti-settling agents, provides immediate cetane boost up to 4 numbers to reduce application hard starts, prevents corrosion & improves fuel economy, contains less than 15 ppm sulfur & burns ash free.