Wondering if 15W-40 oil is only for diesel engines? Learn where this oil grade is used, and whether it’s safe for gas-powered ...

Key Considerations for Shifting to a Lower Viscosity Oil For off-road diesel equipment, 15W-40 has been the predominant oil and likely will be into the foreseeable future. Off-road fleets tend to ...

The best engine oil for Maruti Ciaz is the shell HX5 15W-40 which is the fully synthetic if it is a petrol engines and for diesel engines Shell Helix HX-7 Synthetic 5W-40.