Delo Extended Life Coolant/Antifreeze products are single phase, ethylene glycol based products available in various dilutions that are based on patented aliphatic carboxylate corrosion inhibitor technology specifically formulated for heavy duty cooling system applications that require nitrite.


Delo Extended Life Coolant/Antifreeze products are recommended for use in a wide variety of cooling system applications including on-road, off-road and stationary engine applications.  These products are also recommended in mix fleet applications where heavy duty and light duty trucks are present.  Please check your OEMs coolant recommendations.


Managing costs – Helps eliminate the cost of using SCAs (supplemental coolant additives), regular testing and the manpower required to perform these tasks effectively eliminating those costs when compared to conventional or fully formulated coolants.

Long Service Life – 750,000 miles on-road use (8 years or 15,000 hours off-highway use) or 1,000,000 miles/20,000 hours/8 years with a Delo Extender addition at 500,000 miles/10,000 hours/4 years.

Optimal cooling system operation – The silicate free formula improves heat transfer when compared to silicate containing formulations.  Silicates deposits can reduce heat transfer and increase downtime due to over-heating.

Maximum Hardware Life – Maximum water pump life due to minimal water pump seal wear resulting from the silicate free formulation.

Excellent Protection – Effective, long term corrosion protection, even at elevated temperatures, of commonly found cooling system metals.  Effective at protecting aluminum in high temperature applications.

Applications – Recommended for use in on-road, off-road and stationary engine applications that call for an extended life, silicate and phosphate free formulation that contains nitrite and molybdate.  Can be used in engines using variable fuel types and variable emission control protocols.  Check with your OEM for specific product application requirements.

Compatibility – compatible with other coolant formulations and supplemental coolant additives.  Chevron recommends that this product not be diluted by more that 25% with other coolant formulations.  Dilution by more that 25% will reduce extended life properties.

Biodegradability – Biodegradable in its unused form.

Stability – Storage stable for a minimum of 8 years as purchased.