MVS forums contributor ThinAir gets to the bottom of changing manual transmission fluid in Volvos with M56H-type transmissions: “When I got my car it was advised that I change all the fluids. “Simple enough” I thought. It turns out that being blessed with a manual transmission is also a bit of a curse because there is very little info out there on these guys as compared to automatics. So just getting back from a spin after changing my tranny fluid in my S70 T5M, here is my write up on how to do this!”
What you are going to need:
1. 2 liters of Volvo Transmission fluid #31280771
(I’m not going to argue about OEM vs Brand X. I did my research and if this is what my mechanic uses (fanatical Volvohead) for his M56H tranny, then THIS is what I use.)
2. A 24mm Socket
3. A 24mm Wrench
4. A socket extension at least 10 inches long
5. A funnel and tubing or a pump of some kind
6. A large oil change container.
7. A lot of rags.
9. Jack stands.
Ok. First things first. Loosen the lug nuts on the left driver’s side wheel. Jack your car up, place the jack stands and chock the rear wheels. Next, finish taking the wheel off and place it out of the way. Now slide under the left side of the car with your head in front of the axel. Looking up you will see this:
Next grab your 24mm wrench and loosen her up:
Next place your oil change container under the drain. If you are not interested in making a mess like I did I would advise placing a funnel under the hole because the fluid is going to hit the frame, spread across it and cascade off of it. So pull the plug out and let the fluid drain. While it is draining I took out the fill plug. Mount up your 24mm socket to your extension and go at it straight through the wheel well.