Fuel System 53 Diesel Fuel Specification Quality Fuel quality is an important factor in obtaining satisfactory engine performance, long engine life and acceptable exhaust emission levels. Volvo engines are designed to operate on most diesel fuels commercially available today. Volvo Trucks North America, Inc. recommends the use of diesel oil fuel which meets the specification ASTM D975 (grades No. 2–D and No. 1–D). Note: The use of lighter fuels (grade No. 1–D) can reduce fuel economy. The fuels used must be clean, completely distilled, stable and non-corrosive. Always try to keep the fuel tank full. DO NOT put alcohol into the fuel tank. Fill the tank after completing driving for the day.
Note: When draining the fuel tank, collect the waste in a fuel proof container. Take the drained fuel and water to a recycle or waste management center. Open the drain at the bottom of the fuel tank approximately every 30,000 miles (50,000 km) or 300 hours, to drain off any water and/or sediment. Yearly or at 120,000 miles (200,000 km), tighten all fuel tank mountings and brackets. Check all hoses, pipes and lines to and from the fuel tank. At the same time, inspect tank and connections for any signs of leakage. Make sure that hoses and lines are not resting on or touching shafts, couplings, hot surfaces or sharp areas.
Since all machinery vibrates and moves to a certain extent, clamps and ties can fatigue with age. Inspect fasteners frequently and tighten or replace them as necessary.