Zerex Pre-Charged Heavy Duty (HD) 50/50 Prediluted Ready-to-Use Antifreeze/Coolant 1 GA

Heavy duty formula meets the harsher demands of heavy-duty diesel engines such as Cummins, DDC, MACK, Navistar and Paccar

Pre-charged with corrosion, scale and rust inhibitors so that radiators, water pumps and other metal cooling system parts stay clean, and your antifreeze flows and functions properly.

Protects all cooling system metals including aluminum and won’t harm gaskets, hoses or original vehicle finish

Pre-mixed green solution is ready-to-use and comes in a 50/50 ratio with deionized water to eliminate the guesswork

3 year/150,000 mile guarantee protects against engine failure caused by freeze-ups or boil-overs

Batch-tested in the lab, fleet-tested in the real world to help car and truck owners achieve optimal performance and maximize engine life.

Contains 30 – 50 ppm of denatonium benzoate as a bittering agent