Reliant Premium Plus™ synthetic blend diesel engine oil is a lower viscosity next generation diesel engine oil formulated to meet the latest oil and engine technology standards. It has been created with the highest quality base stocks and latest advancements in additive technology for maximizing engine durability, service efficiency and fuel economy without sacrificing engine protection. Reliant Premium Plus™ diesel engine oil is intended for modern (2017 and newer) diesel engines.

Reliant Premium Plus™ diesel engine oil has been formulated to exceed industry requirements of the new API FA-4 specification and tailored to meet leading OEM (Original Equipment Manufacturer) engine design / requirements for modern diesel engine service / operation. Reliant Premium Plus™ diesel engine oil FA-4 may be incompatible with older API Commercial Category (API CK-4, CJ-4, CI-4 Plus, CI-4) oils and that any interchange (co-mingling) should be avoided, as earlier diesel engines may not be designed to operate with lower viscosity grades. Consult OEM prior to selection.