Fuel and engine oil additives are developed to keep engines running longer, more efficiently and with lower emissions. Some additives have been claimed to improve fuel efficiency by as much as 20% although this is rarely verified by users.
Do your calculations first to see if it’s cost-effective to invest in a certain additive and check with fellow motorists who have successfully tried it before purchasing such products.
Aggressive driving behavior such as “jackrabbit” starts from traffic lights and hard braking may reduce travel time by about 5% (hey, that’s just 3 minutes out of an hour’s trip) but may increase fuel consumption by 40%!
Aggressive driving saves you little time, increases your blood pressure, wastes fuel, increases emissions and causes excessive engine and brake wear. It may also increase your chances of involving in a road accident!
Air conditioning could easily add 10% to your fuel consumption. Turning off the aircon in the morning or on a cool day helps save fuel. Parking under a shade will also lighten the load on the aircon later.
However at speeds above 70kmh on an expressway, it is more fuel-efficient to turn on the aircon than to wind down the window.
Replacing a dirty air filter will improve your fuel economy by as much as 10% and protect your engine. The air filter keeps out the impurities, which can damage your engine in the long run.