Red 91

Make sure you can loosen the fill plug before you drain the trans.

BigMac2395

Thanks, I am going to pick up the 17mm allen socket to remove the plugs tomorrow. Then I will give it a try.....I have sprayed some wd at the plugs in hopes of making them loosen up a bit easier....I will let you know how it went....

Thanks Russell.

Christi@n

I've i hand ready to fill my 1995 ZF red line MTL, not tested yet , so I'm not be able to say you if improvement in shifting to make , anyway think yes

BigMac2395

The plugs came out without issue. I drained the fluid. Let it drain for awhile. Cleaned up the plugs and got out my fill hose and snaked it through down past the firewall and refilled with the redline lightweight shockproof gear oil. Talked to Bill from ZFdocs and he said ok to use that fluid. He also said no thread sealant of any kind on the tranny plugs or fill plug. Just torque to 26lbs. It all went just fine.

PS I also replaced my fuel filter while I was down there. 😝

Christi@n

Whrench size for plug?

Allen socket Both 17mm fill and drain?

BigMac2395

Yes, 17mm for both.

Christi@n

Just replace trans fluid with red line mtl, going out to take a ride, will come back soon to let you know how its feel

Christi@n

Red line MTL works very well, after 7 hours, improve are the shifted, like butter, all gear are smoother than old fluid were, that think was a 20 years old fluid.

Reverse gear also is very smooth, before with old fluid was very hard to engage, and sometimes malfunction on back up lights switchhappened, missing to turn on lights, no more

Great smell, typical petroleum, i love it, red colour,
Tomorrow i will re check level, think it will be necessary to add fluid a little, cause today car wasn't on perfect flat surface...