Oil keeps your engine lubricated and reduces heat. Your oil filter helps prevent engine damage by removing contaminants that build up in the oil. Carbon, dirt and debris become suspended in the oil and cause it to lose effectiveness, which leads to increased engine wear and decreased fuel economy. Regular oil and filter changes keep your engine clean and lubricated.
Your transmission transfers energy from the engine to the wheels to get your vehicle moving. Transmission fluid lubricates, cools, and cleans the inside of the transmission while maintaining the necessary pressure inside the transmission, required for it to function properly. Whether your transmission is automatic or manual the transmission fluid will eventually break down. If it isn’t replaced components inside can overheat which will cause transmission failure.
Engine coolant, or anti-freeze as it’s commonly known, ensures your engine doesn’t freeze or overheat. Coolant works by removing heat from the engine block, protecting the engine and lubricating the water pump seals. Over time coolant loses its ability to protect vital engine parts.
The differential works with the transmission to deliver power from the engine to the axle to rotate the wheels. Like engine oil, heat causes wear on differential fluid, which can lead to excessive wear on the gears and bearings.
The transfer case is the heart of a vehicle’s 4-wheel or all-wheel drive system. It provides power to both the front and rear differential assemblies, which turn your wheels. It also allows you to switch between gears, such as 4High and 4Low. Like engine oil, the fluid that lubricates the transfer case will begin to break down over time and lead to excessive wear on bearings and gears.