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Delo® Coolants

Delo Coolant / Anti-freeze bottle

Effective coolants are vital to optimizing performance and maximizing engine life.

Delo Extended Life Coolant/Antifreeze has dramatically simplified the way cooling systems are maintained, while delivering optimum performance. Our patented organic corrosion inhibitors eliminate the need for supplemental coolant additives and maximize hardware performance and heat transfer over the life of your engine.

Proven Protection — Reduced Costs

Millions of miles of on- and off-road use have proven that Delo ELC products provide exceptional performance and can help reduce cost of use when compared to conventional and fully formulated coolants.

Delo Extended Life Coolant/Antifreeze

Imagine a coolant/antifreeze system that requires only these simple steps to achieve a service life of 750,000 miles/12,000 hours/8 years:

  • Use of Delo ELC 50/50 for top-up
  • Regular visual inspection for signs of contamination
  • Bi-annual check for freeze point

That's just what Delo Extended Life Coolant/Antifreeze offers.

Delo Extended Life Prediluted 50/50 Coolant/Antifreeze

For your convenience, we also offer a 50/50 mixture of Delo ELC concentrate and deionized water. Delo ELC Prediluted 50/50 can be used for top-up or initial fill.

Delo Extender

For an even longer service of 1,000,000 miles/20,000 hours/8 years, add Delo Extender at 500,000 miles/10,000 hours/4 years.

Delo Extended Life Coolant/Antifreeze - Nitrite Free

With a service life of 600,000 miles/12,000/6 years, Delo Extended Life Coolant/Antifreeze - Nitrite-Free has been formulated to meet the requirements of Detroit Diesel/Mercedes-Benz when a nitrite-free extended life coolant is required. Other OEM engine types that call for nitrite-free extended life coolants include Japanese OEMs, like Komatsu and Isuzu, and European OEMs, like Volvo (construction equipment) and MTU. No addition of supplemental coolant additives (SCAs) or Extender is needed or recommended with Delo Extended Life Coolant/Antifreeze - Nitrite-Free.

Delo Extended Life Coolant/Antifreeze PG

Delo® Extended Life Coolant/Antifreeze PG are single phase, propylene glycol type products based on Chevron's patented aliphatic carboxylate inhibitor system with nitrite and molybdate added. Delo Extended Life Coolants/Antifreeze PG do not require the addition of supplemental coolant additives to obtain a service life of 750,000 miles/8 years/ 12,000 hours with correct top-up practices. Delo Extended Life Coolants/Antifreeze PG meet the CAT$#174; EC-1 specification.

Delo XLI Corrosion Inhibitor Concentrate

Delo® XLI is recommended for use in OEM equipment recommending a nitrite free, water based carboxylate based corrosion inhibitor.

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