1: Replace Your Coolant Temperature Sensor
One of the critical aspects of a tune-up that owners overlook is the need to replace coolant temperature sensors. The coolant temperature sensor plays a critical role in the fuel mapping. Your on board engine computer (ECU) will continue to dump fuel into the engine until it reaches operating temperature.
A coolant temperature sensor doesn’t necessarily fail. It merely sends the wrong temperature as internal resistance builds up over time. This is why owners often overlook this critical tune-up item.
2: Change Your Oil and Filter Seasonally
Even if you are running a synthetic that needs to be changed every 10,000 miles or 6-months, you have to change it for the seasons. You can literally feel the effect of oil viscosity on the engine when you are driving on an oil that is too thin or too thick. An oil that is too thin, 0W-30 or 5W-30, will create more valve chatter and vibrations in the engine when you accelerate. An oil that is too thick will put excessive loads on the battery and starter and cause premature wear on other cold engine parts.
3: Use a Sealant on Exhaust Parts
Modern sealants can be used on virtually any surface to repel water and limit wear to vehicle components. Even if you apply an undercoating to protect your undercarriage against oxidation, a sealant should be applied to exhaust parts because it can withstand the heat.
4: Check Your Spark Plugs Every 30,000-Miles
Even though many spark plugs today have platinum tips or other alloys that do not erode as quickly as traditional copper plugs, you still have to remove them every 30,000-miles to prevent them from seizing in the engine. Always apply a fresh coating of anti-seize and torque to spec. after verifying condition.
5: Use White Lithium Grease
You can purchase a can of white lithium grease in an aerosol can at any automotive store. Spray this liberally on door hinges and the external components of door and trunk locks for years of smooth problem-free operation.
6: Use Graphite
For the internals of your locks and ignition, be sure to lubricate the internal parts of your key entry systems with graphite. This will reduce the wear and tear on parts that accumulate with age and lead to premature failures.
7: Use Fuel Injector Cleaner
A quality fuel injector cleaner like Techron should be used regularly to keep your fuel injectors running efficiently. You should also replace your fuel filter every 30,000-miles or as suggested by your manufacturer.