See also:

Adding engine coolant
When adding coolant, make sure it is a 50/50 mixture of engine coolant and distilled water. Add the mixture to the coolant reservoir, when the engine is cool, until the appropriate fill level is o ...

Driving style — good driving and fuel economy habits
Give consideration to the lists that follow and you may be able to change a number of variables and improve your fuel economy. ...

Fuel quality
If you are experiencing starting, rough idle or hesitation driveability problems during a cold start, try a different brand of “Regular” unleaded gasoline. Do not add aftermarket fuel additive ...