This heavy-duty Deloฎ Extended Life Coolant System was developed in Chevron laboratories and has logged millions of successful on- and off-road use miles. Incorporating patented organic corrosion inhibitor technology, it provides unsurpassed protection for radiators and cooling systems in hot or cold conditions. The system includes:

• Delo Extended Life Coolant/Antifreeze, a single-phase, ethylene-glycol type heavy duty diesel engine coolant

• Delo Extended Life Prediluted 50/50 Coolant/Antifreeze, a 50/50 mixture of Delo Extended Life Coolant/Antifreeze with deionized water for freeze protection down to -37ฐC, and boil-over protection to 129ฐC (15-pound pressure cap)

• Delo Extender, a prescribed recharge for Delo Extended Life Prediluted 50/50 Coolant/Antifreeze, which is specifically formulated to double its life.

Features
• 750,000 miles/15,000 hours/8 years with no Extender or 1,000,000 miles/20,000 hours/8 years with an Extender added at 500,000 miles/10,000 hours/ 4 years.

• Effective, long-term corrosion protection for aluminum, brass, cast iron, steel, solder, and copper

• Prevents cylinder liner cavitation erosion

• Long-life inhibitors do not deplete

• No need for supplemental coolant additives (SCA)

• Superior protection at high operating temperatures

• Fewer abrasive solids reduces water pump seal wear and extends water pump life


Select Performance Specifications
For heavy-duty diesel service
• ASTM D 5345 (Prediluted 50/50)
• ASTM D 4985
Delo Extended Life Coolant System meets:
• Phosphate-free requirement of European OEMs
• Silicate-free requirement of Japanese OEMs
• Caterpillar EC-1
• Navistar B1, Type 3