There's 129 threads online about this. I thought you could drain and fill the ATF SP3 on the torque transfer side.

I was talking to a guy at the dealership the other day that said it has to be bled with the MUT-3. I'm hoping he is wrong.

Has anyone changed the SP3 themself? I thought it could be changed with a simple drain and fill because the fluid in the pump and lines is separated from the fluid bathing the clutches in the AYC.

 

I drained and filled mine at the rear diff. Topped off the trunk tank, drove for a bit, then checked the trunk tank again to make sure it stayed topped off. I haven't had any issues, but that doesn't mean my way is best.

 

It's a drain and fill unless you run the reservoir dry

 

Makes sense. I'm going to try your way.

How often do you guys change the side with SP3?

 

I do it every 15k or so. FYI, the fill hole is a ***** to find. Definitely look it up before you start. I found 3 that were blank holes before finding the actual fill.

 

Just drain and fill.

 

Drain and fill ..actually the trunk reservoir oil doesnt drain if you drain the rear diff section..Did mine at 20k no problems