For instance; Are all brands of gasoline created equal? How can you tell the difference? Because finding the right gasoline for your car is important, stick with major brands with high detergency and deposit control additives to prevent fouled fuel injectors. Check your owner's manual for the recommended octane rating.

A quick tune-up; If your vehicle's gas mileage decreases or isn't what it should be, maybe you should check the engines air filter. A dirty air filter reduces gas mileage and car performance while increasing car repair costs and pollution.

A well tuned car also means maintaining your car's normal engine temperature. Service your engines cooling system regularly. Check for bad hose clamps or leaks around the radiator and hose ends. Check the coolant level (Use a mixture of 50% anti-freeze and 50% water). And while your are there, it is always a good idea to check your car's belt(s). Most cars have one belt called the serpentine belt. If this belt goes out, your car will fail to function.
Also build-ups of oil and dirt on the engine can cause your engine to run hot and hide leaks. So keep your engine clean.

Do you do your own vehicle maintenance? Then here is something else for your checklist. If you put a lot of miles on your car, then consider replacing your cooling system thermostat and exhaust oxygen sensors. You or your mechanic should have these replaced about every 50,000 miles means prevention from potential problems down the road keeps your car an Eco-Auto.