Do I need to modify any service intervals when switching from petrodiesel to biodiesel?
Due to the solvent nature of biodiesel and the potential for “cleaning” of the vehicle fuel tank and lines, new fuel filters should be installed when biodiesel is introduced to older or used engines. For the first two changes, the fuel filter life will be half the standard. When using biodiesel fuel, the engine oil level must be checked daily. If oil becomes diluted with fuel, shorten oil change intervals. When using biodiesel blends greater than B20, oil service intervals should be cut in half. In no instance should the fuel dilution of the oil be allowed to exceed 5 percent. OILSCAN™ can be used to verify fuel dilution levels. Refer to Diesel Engine Oil and Filter Service Intervals for more details regarding biodiesel and engine oil change intervals.
