Mobil Delvac Extended Life 50/50 Prediluted Coolant/Antifreeze is a 50/50 mix of Mobil Delvac Extended Life Coolant/Antifreeze and deionized water. Mobil Delvac Extended Life 50/50 Prediluted Coolant/Antifreeze should be used when topping-off cooling systems filled with Mobil Delvac Extended Life Coolant/Antifreeze to ensure proper inhibitor levels are maintained. 

Mobil Delvac Extended Life Coolant/Antifreeze should be maintained between a 45% to 60% coolant and a 55% to 40% water mix for optimal performance.

Mobil Delvac Extended Life 50/50 Prediluted Coolant/Antifreeze features a patented Organic Acid Technology (OAT) formula that protects cooling systems for 600,000 miles of on-road use (6 years or 12,000 hours of off-highway use) without the use of Supplemental Coolant Additives (SCAs). Proper maintenance includes the addition of Mobil Delvac Extender at 300,000 to400,000 miles of on-road use (3 years or 6,000 hours of off-highway use). When required, you should also top-off the cooling system with Mobil Delvac Extended Life Coolant/Antifreeze or Mobil Delvac Extended Life 50/50 Prediluted Coolant/Antifreeze.

Mobil Delvac Extended Life 50/50 Coolant/Antifreeze is a phosphate-free, nitrite-free, silicate-free and borate-free coolant which uses proprietary organic corrosion inhibitors to provide wet sleeve liner cavitation and corrosion protection of all cooling system metals.

• Prediluted with deionized water. No need to add water at initial fill or when topping-off.
• Eliminates the need for SCAs and chemically charged filters, saving time and money.
• Provides long-term elastomer compatibility.
• Unique formula is tolerant of all water qualities and inhibits the formation of hard water scale.

Mobil Delvac Extended Life Coolant/Antifreeze is recommended for use in the cooling systems of all types of heavy-duty diesel, gasoline and natural gas engines.

Based on available information, this product is not expected to produce adverse effects on health when used for the intended application and the recommendations provided in the Material Safety Data Sheet (MSDS) are followed. MSDS's are available upon request through your sales contract office, or via the Internet. This product should not be used for purposes other than its intended use. If disposing of used product, take care to protect the environment.