Mobil Coolant ER Radiator Fluid

Mobil Coolant ER is an extended-life, 33% pre-mixed OAT-based coolant formulated for up to 5 years or 250,000 km service life. Its organic acid technology provides superior corrosion protection for aluminum, cast iron, copper, and solder—especially critical in modern high-aluminum engines. Maintains chemical and thermal stability under severe heat cycling and prevents sludge formation that impairs coolant flow. Approved to ASTM D6210 and VW TL 774 G; compatible with gasoline, diesel, and hybrid powertrains.