Using Quality Fuel

A quality fuel (gasoline) must accomplish much more than produce combustion. It must also:

1. Minimize lacquer, varnish and other deposits on fuel delivery components.
2. Resist gum formation and other deterioration during storage.
3. Prevent metal corrosion in the fuel tank
4. Avoid icing in cold weather.
5. Provide easy starting in winter, but avoid vapor lock in summer.

Note that if your car is difficult to start, but is mechanically sound, it may be necessary to experiment with different brands of gasoline in order to select a less volatile blend. A highly volatile gasoline is more prone to vaporize (form bubbles) and cause vapor lock. The vapor lock will prevent the flow of liquid fuel and will cause stalling or difficult starting.

In general, use a high quality, nationally advertised brand of gasoline with appropriate, but not excessive, octane rating. For fuel injected engines, be especially sure the gasoline has detergent additives to keep injector tips clean and deposit free. If a high quality gasoline is used consistently and the fuel filter is changed at recommended intervals, additional gasoline additives may not be necessary.

For diesel engine owners, use a high quality diesel fuel with the lowest possible sulfur content since diesel fuel by nature has very high sulfur content. Burned sulfur leaves abrasive residue and acid in the engine. Both shorten engine life.

SYSTEMS
FUEL
CORRECT OPERATION
ENGINE KNOCK AND PING