An engine coolant that never needs replacing, for all intents and purposes, has been introduced by Chevron Products. The enhanced
formulation of Delo Extended Life Coolant and Texaco Extended Life Coolant is good for 750,000 on-highway miles, 8 years, or 15,000 hours in off-road vehicles without the use of chemical additives or extenders. It needs only normal topping up.

In fact, if a Chevron chemical extender is added at 500,000 miles/10,000 hours/4 years, the cooling system will be protected for a whopping one million miles or 20,000 hours/8 years. These dramatic increases over current ELC products will result in measurable
cost reductions – over $500 per vehicle annually — for truck operators.

By comparison, current extended-life coolants have a life expectancy of 400,000 miles at most without extender and 600,000 if
extenders are used at 300,000 miles/12,000 hours.

As engine technologies advance, higher operating temperatures will become the norm. In order to protect newer engines, Chevron’s
new ELC formula has been engineered to provide exceptional heat transfer capabilities, the company says, along with reduced
electrical conductivity and improved corrosion protection.

The new formula meets the new heavy duty coolant spec ASTM D6210 and exceeds most major coolant specifications, including
Caterpillar EC-1.

Chevron notes that an estimated 40% of engine failures are coolant related.