Don’t Switch Off Engine
This is a “don’t” that it pays to remember. When coasting with the car’s momentum turning over the engine, don’t switch off the ignition. Some motorists believe that by switching off they are increasing the engine’s resistance. If the carburettor is set to provide a proper idling speed, the gain in breaking power is but slight, and not enough to compensate for the potential damage through unburned fuel which is admitted to the cylinders, there to condense and wash off the oil toy which the pistons, are lubricated. Coasting
Coasting down steep hills in neutral is dangerous. Using the engine as a brake, that is, a gear engaged and the throttle closed, gives the smoothest braking effect, and is least likely to cause skidding.
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Dominion, Volume 31, Issue 153, 25 March 1938, Page 15
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128Don’t Switch Off Engine Dominion, Volume 31, Issue 153, 25 March 1938, Page 15
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