Transfer case fluid is dirty Inspection The transfer case is found on all wheel and four wheel drive vehicles. This systems sends power from the engine to the rear wheels and is a sealed system with fluid to keep it lubricated and moving. What could be the issue that requires a Transfer case fluid is dirty Inspection? Normal Wear and tear over time: Over time like with any flui? it will get dirty. Dirty fluid may cause parts inside to fail.Over or under filled can cause stress on internal parts and can cause them to fail. What to expect One of our Experienced Mobile Mechanics will come and Inspect the transfer case fluid and see if it needs to be replaced. They will then give you a copy of the report and an estimate cost to replace if needed. How is a Transfer case fluid is dirty Inspection done by a mechanic? The mechanic drains the fluid while the vehicle has been running for a bit. If the fluid is dirt? new fluid will be added to the proper level. Before installing drain plu? the mechanic will make sure there is no metal shavings. The drain plug is magnetic to catch any metal shavings so its best to clean it off before installing it back.Then the system is checked for leaks and taking for a test drive. How important is having a Transfer case fluid is dirty Inspection? Without making sure the fluids in your vehicle are changed when they need to. It could risk causing damages to internal systems.