Quote Originally Posted by Gian Paulo View Post
Gud AM tsikoteers. Aside from changing filters, what other means to bring back or improved FC? Thanks.
Keep the engine in tip-top shape. Change oil (in the proper viscosity) and perform all required PMS as prescribed by your car manufacturer. Engines will eventually lose efficiency as they age. However, keeping it healthy will prolong its life and keep it within its optimal operational efficiency longer.

Equally important is your driving style. Hard accelerations and decelerations will not only use up more fuel, it will also promote additional mechanical wear on the engine and powertrain, losing its efficiency somewhat. Even a hybrid that's driven hard will consume a lot of fuel.