12V 5.9 Cummins (1989 to 1997) Fluids

Schaeffer's 0132 Moly EP Oil Treatment is an extreme pressure additive you pour in with your engine oil. It is made for engines that are showing th...

Schaeffer's 0219 SynForce Green NLGI #1 is an extreme heavy duty, multi purpose aluminum complex grease for parts that see heavy loads, shock, wate...

Schaeffer's 0137 Diesel Treat 2000 Ultra Low Sulfur is an ashless, all season diesel fuel additive. Ultra low sulfur diesel is hard on pumps and in...

Schaeffer's 0137CTPA CarbonTreat is an all season diesel fuel additive made for high pressure common rail trucks. Under common rail pressure and he...

Schaeffer's 0191 Micron Moly Racing Oil 20W-50 is a high zinc racing oil for high performance gasoline engines, including turbocharged and supercha...

Schaeffer's 9000 SynShield OTR Plus 5W-40 is a full synthetic heavy duty diesel engine oil. It flows like a 5 weight on a cold start and protects l...

Schaeffer's 0137ULSW Diesel Treat 2000 Winter is a cold weather diesel fuel additive and anti gel. It protects ultra low sulfur diesel from gelling...

Schaeffer's 9012 SynShield OTR Plus 10W-30 is a full synthetic heavy duty diesel engine oil built for fuel economy without giving up wear protectio...

Schaeffer's 0700 SynShield Durability Advantage 15W-40 is a synthetic plus heavy duty diesel engine oil for trucks that tow, haul and work. 15W-40 ...

Schaeffer's 0204SAT All Trans Supreme is a full synthetic, multi vehicle automatic transmission fluid made to cut transmission wear. It blends synt...

Schaeffer's 0709 Supreme 7000 Synthetic Plus Racing Oil 10W-30 is a high zinc, para synthetic racing oil for high performance gasoline engines, inc...

Schaeffer's 0723 SynShield Ultra Performance 5W-30 is a full synthetic heavy duty diesel engine oil made for stop and go driving, long idle time, s...

Schaeffer's 0711 SynShield OTR Plus 10W-30 is a synthetic plus heavy duty diesel engine oil built for trucks that rack up highway miles. The lighte...

Schaeffer's 0300ULSW Arctic Shield + is a concentrated, ashless winter diesel fuel additive built for trucks fighting moisture in the fuel. It prot...

Schaeffer's 0708 Supreme 7000 Synthetic Plus Racing Oil 15W-40 is a high zinc, para synthetic oil for diesel and gasoline engines that get run hard...

Schaeffer's 0722 SynShield Ultra Performance 10W-30 is a synthetic plus heavy duty diesel engine oil made for the hard kind of driving: stop and go...