Some maintenance practices can be performed by the driver, such as checking for fluid leaks and checking tire pressure. The best time to check the tires is when they are cold, at least three hours after driving. Properly inflated tires can save up to six percent in fuel consumption. Air filters A clogged air filter restricts airflow to the engine, which means wasted gasoline and higher emissions. A dirty air filter can cause a 10 percent increase in fuel consumption.
Underinflated tires increase rolling resistance, waste fuel and accelerate tread wear.
Improper wheel alignment will cause premature tire wear, which increases your operating costs and can cause the vehicle to work harder, which wastes fuel. Emissions System Make sure that your regular servicing includes an inspection of the emissions system. Keep in mind that a catalytic converter can be operating poorly even when the engine appears to be running well. 4.2.6 Oil Changes Neglecting to replace worn-out oil results in poor engine performance, higher fuel consumption and possibly severe engine damage. When you are having the oil changed, request that they use re-refined motor oil.