Diesel Engine Oil

United Super Premium Fleet SAE 15W-40 is an API CK-4/SN premium heavy-duty diesel engine oil formulated to provide improved wear protection and control of high temperature oxidation and soot control in both new and older model engines for on- and off-highway applications. This heavy duty diesel engine oil also provides better deposit control, reduced oil consumption, improved low temperature pumpability and controls soot-related viscosity changes.

United Railroad Engine Oil is formulated to provide year-round lubrication in two- and four-cycle, low- and high-horsepower, turbocharged, railroad, marine and stationary medium-speed diesel engines requiring zinc-free lubrication. United’s optimized additive formulation has a reduced ash content and incorporates advanced dispersant technology. It is engineered to reduce oxidation and provide thermal stability along with improved yellow metal wear protection. United Railroad Engine Oil is formulated to provide lower oil consumption, lower deposits and longer filter life.

United Super Diesel SAE 15W-40 is an API CK-4/SN heavy-duty diesel engine oil formulated to provide improved wear protection and control of high temperature oxidation and soot control in both new and older model engines for on- and off-highway applications. This heavy duty diesel engine oil also provides better deposit control and reduced oil consumption.

United Super Premium Fleet Synthetic Blend SAE 10W-30 is an API CK-4 premium heavy-duty diesel engine oil formulated to provide improved wear protection and control of high temperature oxidation and soot control in both new and older model engines for on- and off-highway applications. This heavy duty diesel engine oil also provides better deposit control, reduced oil consumption, improved low temperature pumpability and controls soot-related viscosity changes.

United Super Diesel SAE 10W-30 is an API CK-4 heavy-duty diesel engine oil formulated to provide improved wear protection and better control of high temperature oxidation and soot control in both new and older model engines for on- and off-highway applications. This heavy duty diesel engine oil also provides better deposit control and reduced oil consumption.

United Super Diesel is formulated to provide improved wear protection and control of high temperature oxidation and soot in older model diesel and gasoline engines. It also provides good deposit control and controls soot-related viscosity changes.

United Super Premium Synthetic SAE 5W-40 surpasses performance requirements of API CK-4 and OEM standards along with the demands of modern engines equipped with advanced emission-control technology. Fully backward compatible to protect older engines, United Super Premium Synthetic SAE 5W-40 withstands the stress of acids generated during combustion and protects against soot and heat to help prevent corrosion, deposits and wear. Utilizing United Super Premium Synthetic SAE 5W-40 enables fleets to capture long-term cost efficiencies, while maximizing equipment performance and protection.