Winters Semi-Synthetic Rear End Lube w/ Moly - 80-90-140W - 1 Gallon 931213 Radiator Relief is also safe

Radiator Relief is also safe to use with all types of radiator materials including cast iron

1975-1987 Ford E-150 Econoline

This bolt-on DOR (Dual Out Rear) emissions-legal system for the 2 and 4 door models

Powerglide or TH350 installations with Coyote swaps

Winters Semi-Synthetic Rear End Lube w/ Moly - 80-90-140W - 1 Gallon 931213 Radiator Relief is also safeSpecifically engineered for rear axles, semi synthetic 80 90 140W Hypoik Lube has moly additives to reduce friction and enhance durability. For more than 60 years, Winters Performance Products has been producing high performance rear ends and driveline components for racing and street use. Their product offering includes everything from quick change gear sets to shifter assemblies, as well as many components specifically for the sprint car market.