LUBRISTRONG HEAVY-DUTY ANTIFREEZE AND LONG-LIFE COOLANT 50/50 PRE-DILUTED is formulated with ethylene glycol, deionized (purified) water and performance additives to provide maximum protection against freezing, boil-over, and corrosion. Designed for use in heavy-duty diesel engines, this long-life coolant/antifreeze is suitable for use in nearly all automotive and diesel engines which require "extended-life" or "long-life" antifreeze/coolants based on carboxylate chemistry. LUBRISTRONG HEAVY-DUTY ANTIFREEZE AND LONG-LIFE COOLANT 50/50 PRE-DILUTED is formulated with Hybrid Organic Acid Technology (HOAT), extending the lifespan of the product for Up to 6 years or 960,000 km (600,000 miles) without the use of Supplemental Coolant Additives (SCA’s).