- Designed for heavy-duty diesel engines which use more than 33% antifreeze or a supplemental corrosion package- Similar properties and benefits to regular WaterWetter, but lacks rust and corrosion inhibitors- Diesel road cars and light trucks (equipped with Cummins, Duramax, and PowerStroke engines) should use regular WaterWetter to ensure proper rust and corrosion protection- Typical diesel commercial vehicle requires one bottle, treats up to 15 gallons