Carburetor And Fuel System; Fuel Recommendations; Fuel Economy - Hudson Terraplane 1950 Owner's Manual

HUDSON OWNER MANUAL

CARBURETOR AND FUEL SYSTEM

FUEL RECOMMENDATIONS

The engine of your Hudson car is designed to give good performance and
economy with regular grades of gasoline. One of the most important factors in
getting the most out of the fuels available, is correct ignition timing.
The lower grades of gasoline should be avoided in the present day high compres-
sion engines, as they tend to cause "pinging" under normal load conditions, which
requires that the spark be retarded for quieter operation. Retarding the spark
naturally affects the performance of the car, as well as economy of operation and,
therefore, no saving in operation is obtained. Also avoid the use of fuels which tend
to gum up quickly as they materially affect the operation of the engine.
Premium grades of fuel, such as Ethyl, which have a higher octane rating. permit
the use of a more advanced spark timing without knock or "pinging." this will result
in improved performance and economy. It should be remembered, however, that
these extra advantages cannot be obtained from this type of fuel unless the spark
timing is advanced.
For information on "Ignition Timing" see pages 39 and 40.
Gasoline mileage is the subject of considerable discussion among motorists. We
hear a good deal about the results obtained by certain owners which may cause
others to wonder how the claims are substantiated. Unless we understand the
conditions under which the figures were obtained, they mean very little to us.
There are many factors governing gasoline mileage, such as car speed, road condi-
tions, varying wind velocity, temperature changes, heavy traffic and frequent stops.
All of these conditions have a direct bearing on the gasoline mileage your car can
give. There are, however, a number of things you can do in driving to improve your
gasoline mileage.
1. Avoid unnecessary acceleration of the engine.
2. Warm up the engine by letting it run idle for a few minutes when starting, to
permit the oil to circulate properly. This is especially important in cold weather.
CAUTION: Avoid racing the engine during the warm-up period.
3. Accelerate slowly.
4. Do not drive in low or second speed gears unnecessarily.
5. Maintain as nearly uniform speed as possible when driving in city traffic.
6. Avoid sudden and unnecessary stops.
7. Keep tires inflated to the recommended pressure.
8. Do not idle the engine unnecessarily.
9. Use engine oil of the proper viscosity.
10. Keep your car properly lubricated.

FUEL ECONOMY

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