New EPA 2027 emissions rules also mean new diesel engine oil specs. A new generation of heavy-duty engine oils will feature ...

“Do not rely on hearsay or opinion about how a specific brand of oil supports the engine warranty.” There is also a myth that heavier viscosity engine oils are necessary to protect large ...

Demands on heavy-duty diesel engine oils ... to a lower viscosity engine oil was concern around wear protection and engine durability,” says Len Badal, global brand manager at Chevron.

Diesel engine oil typically possesses a higher level of viscosity, which means it pumps at a much lower temperature and takes more heat to start flowing cleanly.