A mark of quality amongst high-end and sustainable oils, the Frankol 5W30 FA-4 is a fully-synthetic oil designed for new-age diesel engines. Fully compliant with 2017 emission standards, the 5W30 FA-4 features excellent oxidation control and protection against rust and bearing corrosion. Its signature characteristic of low-ash formation and effective protection even at low viscosity makes the 5W30 FA-4 last long, extending oil drain intervals and further bolstering fuel-efficiency which it is known for.