58 Fuel System Note: Repair expenses resulting from malfunctions in the fuel system or with engine components when fuel enhancers have been used are not covered under warranty. Some fuel additives can be used to provide temporary relief but they do not replace good fuel handling practices. These products can be used: Isopropyl Alcohol — Use 1 pint per 125 gallons (1/2 liter per 500 liters) of fuel for winter freeze-up protection. Biocide — For treatment of microbe growth or “black slime.” Follow manufacturer’s instruction for treatment. Prohibited Additives The following additives are specifically NOT allowed and must NOT be mixed in with the vehicle diesel fuel: Gasoline:
WARNING Used Lubricating Oil: Volvo Trucks North America, Inc. does not recommend the use of any type of used lubricating oil as an extender in the diesel fuel. Used lubrication oil contains solids and acids from the combustion process that can severely corrode parts of the injection system, resulting in reduced power and higher maintenance cost over time The addition of gasoline to diesel fuel will create a serious fire hazard. Adding gasoline to diesel fuel will reduce the cetane number and increase combustion temperature. If a tank contains a diesel fuel/gasoline mixture, it should be drained and cleaned as soon as possible.