What is Transfer Case Fluid?

A transfer case is a gearbox that is found in both four-wheel and all-wheel drive vehicles. It sends power from a car’s engine to both the front and rear axles. It takes the power in front of the transmission and splits it between the front and rear wheels of a car. Transfer cases can be selectable (can be used on two and four-wheel drives), while others are strictly made for all-wheel drive.

Transfer case fluid is fluid that lubricates and cools a vehicle’s internal parts. In certain cases, transfer case fluid also lubricates a wet clutch. A wet clutch selects how much power is sent to the wheels.

Most transfer cases use automatic transmission fluid, while others use a thicker gear oil.

Why Do I Need A Transfer Case Fluid Replacement?

Transfer case fluid eventually runs out. It also loses its lubrication ability and can degrade over time.

The additives inside transfer case fluid react to water and condensation that forms inside a case, which can damage seals. These additives can also capture a lot of debris and dirt, which stops the fluid from being able to trap material. The additives inside the fluid can also become less effective as it ages.

How to Change Transfer Case Fluid

To change transfer case fluid, first check the level of the fluid. If it is low, it is time to change it. To drain the fluid, a drain plug is removed. The plug is then reinstalled and the fluid is poured into the transfer case.

Some vehicles have fill plugs that can be difficult to access. If this is the case for you, you may need to use a special type of pump to fill the transfer case.

Some transfer cases do not have a drain plug built in them. If this is the case, there are special tools that can suck out the old transfer fluid.

Transfer case fluid replacement can cost anywhere between $500 and $1500, depending on the age and type of vehicle as well as whether it is a new or used car. The best way to protect your transfer case is to get regular transfer case fluid replacements.

How Often Should I Change My Transfer Case Fluid?

The answer to this question will vary depending on your vehicle and its age. Some vehicles require a transfer case fluid replacement every 25,000 km, while others require a replacement every 100,000 km. It is always best to follow your manufacturer’s suggestions, which are located in the owner’s manual.