Tech & Auto
Diesel Vs. Conventional Engine Oil - What’s
The Real Difference?
By DANIEL TROCK
Besides using different fuels, what separates diesel engines from conventional engines is the types of oil both require to function properly and prevent damage.
The first major difference between diesel and conventional/synthetic oil is the additives used to reduce emissions and improve
the engine’s reliability.
Since diesel engines are larger on average and create more gunk in general operation, their oil has a greater concentration of the relevant additives to prevent issues.
Another difference is how their oils are designed to flow depending on the temperature of the engine in which they are operating.
Since a diesel engine is larger and operates hotter than a regular combustion engine, the appropriate oil needs to be able to accommodate
the difference.
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.