How Do You Change the Differential Fluid on a Semi Truck?

Changing the differential fluid in a semi truck is not a difficult task, but it is important to do so in order to keep the truck running smoothly. By changing the differential fluid, you can help extend the life of your vehicle and keep it running efficiently. Here are the steps for how to change the differential fluid on a semi truck.

Step 1: Park your truck in a level area and set the parking brake. This will help ensure that your truck stays in place while you are working on it.

Step 2: Locate the drain plug on the bottom of the differential housing. Remove this plug by using an appropriately sized socket and ratchet.

Step 3: Allow all of the old oil to drain out of the differential housing into a suitable container. Once all of the old oil has been drained, replace and tighten up the drain plug.

Step 4: Fill up your differential with new oil until it reaches its recommended level. You can find this information in your truck’s owner’s manual.

Step 5: Check for any signs of leaks around the drain plug or other areas around the differential housing. If there are any leaks, make sure to address these before continuing.

Conclusion:
Changing the differential fluid on a semi truck is an important part of maintaining your vehicle. Although it may seem like a daunting task, following these instructions will ensure that you are able to complete this job quickly and safely.

Photo of author

Stephen Dunn