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Thread: Changed transmission and differential fluid

  1. #1
    Join Date
    Jul 2011
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    Changed transmission and differential fluid

    I changed both manual transmission and differential fluid today. I got the car last week and I wanted to have it my way regardless of what previous owner did.

    I purchased two quarts of MTF and 75W-90 gear oil. I also got fluid transfer pump. To get the transmission drain and fill plug I needed 8 mm hex key. Every DIY post that I saw was showing 17 mm bolts for these two. Maybe some different productions, I don't know. It didn't look like it was replaced. To get the rear differential you need 14 mm hex. Once car is up it's easy task.

    This was the first time that I put all four wheels in the air. I was a little scared but everything went well. For my record, I took a picture and here it is.



    I initially wanted to do CDV delete at the same time. But, my wife had to go out early and no one else to help me bleed so I had to stop there. I ordered BMW performance SSK so I'm planning to do it when I install SSK.

  2. #2
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    Nice work.

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  3. #3
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    Quote Originally Posted by variate View Post
    I initially wanted to do CDV delete at the same time. But, my wife had to go out early and no one else to help me bleed so I had to stop there. I ordered BMW performance SSK so I'm planning to do it when I install SSK.
    I ran into the same problem



    Worked like a charm and tbh, if you pinch the line it barely needs to be bled (do it anyway) but I got straight fluid out.
    -ADAM

  4. #4
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    My dad was good enough to let me use his power bleeder when I did mine. Talk about making life easy.
    19" VMR VB3 CSL reps w/ General G-Max 3 A/S, BMW Performance short throw shifter, CDV delete, M54B30 swap, and a redneck CAI.

  5. #5
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    Quote Originally Posted by Alphatek45 View Post
    I ran into the same problem



    Worked like a charm and tbh, if you pinch the line it barely needs to be bled (do it anyway) but I got straight fluid out.
    Great idea. Maybe next time. I also got a small c-clamp, so no problem there.

    Quote Originally Posted by static667 View Post
    My dad was good enough to let me use his power bleeder when I did mine. Talk about making life easy.
    I wish I had access to pressure bleeder.


    I got back from a test drive up to Palomar mountain and it feels much better. I can't wait to do CDV and SSK. By the way, there was a motorcycle accident in county road S6. Be careful if you drive up there.

  6. #6
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    So I'm guessing that when most of replace fluids you use a pressure bleeder? What's the alternative?

  7. #7
    spencers Guest
    Quote Originally Posted by static667 View Post
    My dad was good enough to let me use his power bleeder when I did mine. Talk about making life easy.
    Yeah, definitely worth it!

  8. #8
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    Quote Originally Posted by DeM3n View Post
    So I'm guessing that when most of replace fluids you use a pressure bleeder? What's the alternative?
    Assistant who can hold the pedal while you open the valve.

  9. #9
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    Wasn't there discussion, deciding MTF was not the right tranny fluid for our cars?
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  10. #10
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    Quote Originally Posted by danewilson77 View Post
    Wasn't there discussion, deciding MTF was not the right tranny fluid for our cars?
    DW, have been using Red Line MTL in the ZHP transmission for the last 37k might without issue. Also run it in the e36, and used to run it in the e30 too. IMHO, seems to shift slightly better then reg. factory fluid. But, that could just be my imagination...

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