Fuel efficiency of car engines is considered as an imperative and essential factor when buying a new car, all thanks to the high fuel prices. Most car makers have taken action to provide more fuel efficient cars that return more than 80mpg of economy however, there are millions of old cars that people use for their daily commute, by following the simple guidelines below, they can also achieve maximum fuel efficiency and the lowest carbon emissions from their car engines.
1. Keep the Engine Appropriately Tuned
It is very important to follow the maintenance schedule of the engine, for instance, replacement of air filter, spark plug and oxygen sensors, also keep an eye on any on-board diagnostics malfunctions in the Engine Control Module. The most important is to change the engine oil as instructed in your car’s manual.
2. Fuel Evaporation
Fuel evaporation is another used engines parameter that needs to be attended by tightly closing the fuel tank lids and by parking in shades, believe it or not, can improve your mileage by as much as 10 percent.
3. Use the Recommended Grade Engine Oil
The most important factor to keep your car engine at fuel efficient state is proper engine oil with low-kinematic thickness that is also referred to as low “weight” engine oil. You can get better mileage by 1-2 percent by using the recommended grade of vehicle engine oil. For instance, using 10W-30 motor oil in an engine intended to use 5W-30 can worsen your fuel efficiency by 1-2 percent. Contemporary engines have such accurate tolerance that very trivial oil is often required, thicker oil, such as 10W30 or 10W40, may not lubricate as well, because it won’t pour as swiftly into key oil ways and fractures. You must check the owner’s manual for suggested viscosity and ask for it exclusively when oil is changed.