View Poll Results: What is the best manual transmition fluid?

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  • Other? (please elaborate)

    22 47.83%
  • 90 weight

    2 4.35%
  • Royal Purple Synthetic ATF

    14 30.43%
  • Mobil 1 ATF

    8 17.39%
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Thread: 5-speed tranny fluid

  1. #31
    Join Date
    Jul 2011
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    tumwater wa.
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    47
    Thank you sir.

  2. #32
    Join Date
    Aug 2004
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    Latitude: 41.909147 Longitude: -72.450263
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    2,020
    The last time I had the 5speed fluid changed they put in Mercon 5 per the manufactures recommendations. I don't know if they put in the friction modifier or not. Mercon 5 is synthetic oil and I don't know if it has it already. Maybe it is listed in some obscure area but, I have an actual Ford 1995 Thunderbird repair manual and for the life of me I don't see any mention of the friction modifier, just Synthetic Mercon E6AZ 19582-B. How did this Friction Modifier come about?


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  3. #33
    Join Date
    Jul 2007
    Location
    live in quebec canada,GREAT WHITE NORTH
    Posts
    359

    d3m

    i use d3m there was 80w90 when i bough the car so i used d3m and changed it often to wash the trans and it shift a lot better!

  4. #34
    Join Date
    Oct 2003
    Location
    Southern Calilfornia
    Posts
    90
    Quote Originally Posted by matt59 View Post
    Mobile 1 5W/15 motor oil with friction modifier.
    Shifts Smooth, big improvement over standard ATF.
    Here it is 2012 and I haven't changed the tranny oil.
    Oopsy, Still running the same 5w/30 Synthetic motor oil and still no trouble.
    It looks as good as the day I put it in... 2004
    Last edited by matt59; 08-05-2012 at 06:32 PM.

  5. #35
    Join Date
    Jan 2006
    Location
    Broad Run VA
    Posts
    486
    [QUOTE=matt59;1000630]Here it is 2012 and I haven't changed the tranny oil.
    Oopsy, Still running the same 5w/15 Synthetic motor oil and still no trouble.
    It looks as good as the day I put it in... 2004 [/QUOTE

    I am in the oil business and I have never heard of a 5W-15 synthetic motor oil. Who is the manufacture?
    Red 94 5 Speed
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  6. #36
    Join Date
    Oct 2003
    Location
    Southern Calilfornia
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    90
    My bad it is 5W/30 Full synthetic from Wal Mart.

  7. #37
    Join Date
    Nov 2009
    Location
    Lexington, KY
    Posts
    883
    Kind of an old thread but would like some more input on this subject. Just getting ready to put fluid in my 75000 mile M5R2 and still unsure about what to use. Leaning towards the Valvoline High Mileage tranny fluid with a bottle of FM added. I am not a big fan of Pennzoil products.

    Anyone with more input would be greatly appreciated.
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  8. #38
    Join Date
    Apr 2002
    Location
    Norcross, GA
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    3,301
    That's what I use in mine. I don't care for Pennzoil stuff either. I've tried several types of fluids over the years and finally switched to the Valvoline High Mileage with the friction modifier in it. I haven't noticed that any of the fluids worked any better than the ATF does and will probably stick with this stuff from now on. I didn't get any better wear on the blockers with any of the other types of fluids. Only problem I've found is that the friction modifier stinks and the smell lingers for awhile if you spill it.
    90 5spd, best ever E.T. 12.250
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  9. #39
    Join Date
    Jan 2006
    Location
    Broad Run VA
    Posts
    486
    I was going to change my trans fluid the AMSOIL manual trans fluid but after talking with one of the senior tech service guys at AMSOIL, he told me that running a manual trans fluid in a manual trans that calls for an ATF will increase operating temps of the trans/oil which makes since. Higher temp is caused by friction of the thicker oil that the trans was not designed to use. I have decided to stay with the ATF. Also the lighter the oil the more power you have over thicker oil. Which also relates to fuel economy too if your interested in that.
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  10. #40
    Join Date
    Sep 2004
    Location
    Herrin Illinois
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    3,385
    Quote Originally Posted by rjgraul View Post
    I was going to change my trans fluid the AMSOIL manual trans fluid but after talking with one of the senior tech service guys at AMSOIL, he told me that running a manual trans fluid in a manual trans that calls for an ATF will increase operating temps of the trans/oil which makes since. Higher temp is caused by friction of the thicker oil that the trans was not designed to use. I have decided to stay with the ATF. Also the lighter the oil the more power you have over thicker oil. Which also relates to fuel economy too if your interested in that.
    Hey ask him abou super shift I would like to try it but I want to know his thoughts It is the 10 w auto trans racing fluid
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  11. #41
    Join Date
    Jan 2006
    Location
    Broad Run VA
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    486
    Quote Originally Posted by davec73 View Post
    Hey ask him abou super shift I would like to try it but I want to know his thoughts It is the 10 w auto trans racing fluid
    I asked Tech services about the Super shift and they said no just stick with the ATF.
    If you have an SC that you use only for drag racing and trailer it to an from the tack then you can use the MTF ( Manual Transmission Fluid) because the you will not be running the car long enough for the trans fluid to get Hotter than ATF will.
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  12. #42
    Join Date
    Sep 2004
    Location
    Herrin Illinois
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    3,385
    Quote Originally Posted by rjgraul View Post
    I asked Tech services about the Super shift and they said no just stick with the ATF.
    If you have an SC that you use only for drag racing and trailer it to an from the tack then you can use the MTF ( Manual Transmission Fluid) because the you will not be running the car long enough for the trans fluid to get Hotter than ATF will.
    Ive tried atf and frankly there has to be a better option and I wont run atf or synchromesh in the trans im building. If you could Ralph ask them what the comparitive weight 10 20 30 that atf is im thinking of going with a low weight oil or a 0 w 30 if its made.
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  13. #43
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    Jan 2006
    Location
    Broad Run VA
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    Quote Originally Posted by davec73 View Post
    Ive tried atf and frankly there has to be a better option and I wont run atf or synchromesh in the trans im building. If you could Ralph ask them what the comparitive weight 10 20 30 that atf is im thinking of going with a low weight oil or a 0 w 30 if its made.
    What issues did you have with ATF?

    What exactly are you building for a trans?
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