Shell Rotella® ELC Extended Life Engine Coolant/Antifreeze. A fill for life ethylene glycol-based coolant for heavy-duty diesel, gasoline and natural gas powered engines. Formulated to provide high performance corrosion protection and effective heat transfer, freeze & boiling protection. Contains a unique extended life carboxylate inhibitor system and nitrite/molybdate as secondary inhibitors. Miscible and compatible with other extended life AFC. Silicate free formulation leads to longer water pump life and no silica gel formation. Works for up to 600,000 miles in class 8 trucks, up to 600,000 miles or 12,000 hours in other commercial applications, or 150,000 miles (6 years) in passenger cars and light trucks. Contains no silicate, borate, nitrate or phosphate and requires no traditional SCA additions. Meets OEM guidelines and provides protection against cylinder liner pitting. Meets all the requirements of CAT EC-1, TMC RP 329 and RP 338. 50/50 pre-diluted. Gallon.