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Car Facts Concerning MPG


    • There is a reason that tire manufacturers put inflation information on their products. Granted there are liability issues at stake. However, as a practical performance metric, keeping your tires at the proper pressure reduces rolling friction, which in turn creates maximized engine performance. This is because the powerplant is able to use all of its available horsepower most efficiently, as opposed having to overcome the drag from under-inflated tires .


    • An engine's combustion chamber is a highly active and violent environment. Creating the right level of ignition at the right time, however, is critical to the efficiency of an engine. If the spark plugs are covered with sludge, or the connectors are corroded, the engine's ability to ignite the right fuel/air mix at the right combustion value will be damaged and the system will experience reduced mileage.


    • Properly lubricating an engine is critical to the efficiency of an engine, and failure to pay attention to both the levels and quality of the oil in the engine will result in reduced mileage. Considering the number of moving parts this would make sense, however the real culprit is heat since parts expand and contract under load. Therefore, to keep the parts operating within appropriate tolerances and maximize MPG, check and change the oil regularly.

    Air Filter

    • Internal combustion engines (ICEs) depend on a correct air/fuel mixture to ensure the efficiency of your engine. Blocked air baffles that constrain the introduction of airflow throughout the engine reduces its efficiency, and consequently creates a negative impact on MPG performance. The air filter should be changed every 10,000 miles to insure that this channel is clear, and free of obstructions.

    Light Footing It

    • Keeping your foot off the throttle will positively impact the measurement of MPG. One of the most useful tips is to roll the throttle on using progressive pressure, rather than simply "dumping" the throttle. This approach defeats an engine's air/fuel metering by forcing more fuel through the system than it can use, consequently wasting it.

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