Tranmission Fluid: A vehicle's transmission fluid deteriorates over time. Many reason for changing your vehicle's fluid including Hard use : such as frequent stop-and-go city driving, hauling heavy loads, trailer towing. These will accelerate the deterioration. That kind of driving raises the transmissionís operating temperature, and heat puts more strain on the transmission and the fluid. Unlike engine oil, which is primarily a lubricant, transmission fluid serves as both an oil and a hydraulic fluid that helps facilitate gear shifts, cools the transmission and lubricates moving parts.
Oil Changes - Oil changes should be done every 3000 thousand miles to keep your car in the best possible running condition. It lengthens the life of the engine and having service records that show frequent oil changes can help the resell value of your vehicle.
Coolant/Antifreeze: Coolant can deteriorate over time , the coolant can become more acidic over time and lose its rust-inhibiting properties, causing corrosion. Corrosion can damage the radiator, water pump, thermostat, radiator cap, hoses and other parts of the cooling system, as well as to the vehicle heater system. And that can cause a car engine to overheat.