6.7L Cummins Forum

Cummins Filtration has launched a new coolant that the company said offers solid liner pitting protection and enhanced aluminum protection without the use of nitriles, amines and phosphates found in many conventional coolant formulations. Fleetguard ES Compleat OAT (Organic Acid Technology) coolant is NAP (nitrite, amine, phosphate)-free formulation, which the company said makes it acceptable to most OEMs around the world.



Cummins Filtration said it conducted extensive testing before the new formulation was approved for the market. All tests confirmed that the NAP-free ES Compleat OAT coolant provides the anti-freeze, anti-boil, heat transfer and corrosion protection required of today’s fully formulated, heavy-duty antifreeze/coolant. The new formulation also meets ASTM and the performance specifications of most major OEMs including those for Cummins (CES 14603), Detroit Diesel, MAN, Volvo, Mack and Navistar, the company said.
With extended service intervals of 300,000 miles (500,000 km or 6000 hours), ES Compleat OAT offers freeze protection to -34 F° and provides ultimate liner pitting, corrosion, aluminum and solder protection for longer system life, Cummins Filtration said. The coolant is compatible with gaskets, elastomers and other non-metallics in the engine and is formulated for use in all diesel, gasoline and natural gas engines.

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2007.5 Dodge Ram 3500 HD,QC, 6.7L Cummins, 6speed Auto, 4X4, Bighorn Edition.
Click for installs: Carr Steps PML Diff Cover Edge Juice with Attitude Volant Intake Hankook ATM RF10

That great, but I think you should realize since 2003 our Cummins Engines were to have HOAT Hy-brid Organic Acid Technology. Not OAT Organic Acid Technology. You also not to mixed the green stuff or Oat with this as it will create corrosion inside the cooling system.

I will admit, that if you did a complete flush. and drain. Then put this fleet guard stuff in then you could eliminate the miss match additives in the coolant and your system should work fine. However, if you are still under warranty then using the HOAT should be used to avoid having your warranty denied due to a simple difference in coolant.

Shawn