Ans: To check the condition of your differential fluid, follow these steps: *Vehicle Preparation: Ensure your vehicle is on a level surface and the engine is turned off. Put on safety gear like gloves and safety goggles. *Locate the Differential: Find the differential housing, which is typically located near the center of the vehicle's rear axle. *Remove the Fill Plug: Use the appropriate tool to carefully remove the fill plug, which is usually located on the side of the differential housing. *Inspect the Fluid: Insert a clean finger or a dipstick into the differential housing and check the fluid's color and consistency. Healthy differential fluid should be clean and transparent, often with a slightly amber color. If it appears dirty, cloudy, or has a burnt smell, it may indicate a problem. *Fluid Level Check: Ensure the fluid level is up to the fill hole. If it's low, add the recommended type and grade of differential fluid until it reaches the correct level. *Replace the Fill Plug: Once you've checked and, if necessary, topped off the fluid, securely replace the fill plug. Regularly inspecting and maintaining your differential fluid is essential to prolonging the life of your differential and preventing potential issues. If you have concerns about the condition of your differential fluid or encounter any unusual symptoms, consult a mechanic for a more detailed inspection and potential fluid change.