Most liked posts in thread: BMW MTF LT-4 specs and thoughts

  1. cristo

    cristo Well-Known Member

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    #15 cristo, Jun 12, 2019
    After thinking about all this for a while, I'm going to just stay with the BMW MTF-LT-4 and change it every 25-40K.
    It has a very high VI which overrides my concern about the high-ish 100C KV
    (non-tracked manual transmission fluid doesn't usually get nearly as hot as motor oil anyway)
    and even though it shears down a bit with time and miles, more frequent changes will take care of that just fine.
    Also, I already have a few bottles of it.
     
  2. ScottinBend

    ScottinBend Space Cowboy
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    #11 ScottinBend, Jun 7, 2019
    Honestly.......use whatever you feel comfortable using. Then change it regularly depending on use. I don't believe there is that much difference in the products, as long as it is maintained.
     
  3. cristo

    cristo Well-Known Member

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    #17 cristo, Aug 1, 2019
    Last edited: Aug 1, 2019
    I changed the transmission fluid (thought to be old LT-4) to new BMW MTF-LT-4 recently.
    I was puzzled by the apparent big drop in viscosity in the old oil until I did some googling and
    noticed that the additive amounts (Calcium Phosphorus, Zinc, Magnesium) were very similar to Texaco
    MTF-94,which of course is commonly used as factory fill for lots of MINIs. I'll bet the factory doesn't pay
    much attention to whether the transmission has an MTF94 or an LT-4 sticker on it (like mine does)
    when they fill it.
    It's also much more believable that the viscosity would drop from 10.4 (MTF94) to 7.7 in 37K than from
    14.8 (LT-4) to 7.7.

    Actually, if I knew it had MTF94 in it I would have let it go to 50K and change it with MTF94 then.
    I guess it's much of a muchness anyway. I'm happy staying with the more robust LT-4 that's in there
    now and recommended for my MINI anyway.
     
  4. 00Mini

    00Mini Well-Known Member

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    #8 00Mini, Jun 6, 2019
    It's not a an serious lubrication discussion until Bob the Oil Guy quotes start appearing. :)
     
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  5. cristo

    cristo Well-Known Member

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    #10 cristo, Jun 7, 2019
    Last edited: Jun 7, 2019
  6. MCS02

    MCS02 Moderator
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    #2 MCS02, Jun 5, 2019
    I used the Redline and liked it,
     
  7. Dave.0

    Dave.0 Helix & RMW Powered
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    #3 Dave.0, Jun 6, 2019
    I never use Redline or Royal Purple ANYTHING.

    StIck with Amsoil or Motul and just change it now.
     
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  8. DneprDave

    DneprDave Well-Known Member
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    #4 DneprDave, Jun 6, 2019
    I don't like Amsoil, they market it like Mary Kay cosmetics.
     
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  9. MCS02

    MCS02 Moderator
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    #5 MCS02, Jun 6, 2019
    Amsoil is a very good product. I have not tried their eyeshadow:D
     
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  10. DneprDave

    DneprDave Well-Known Member
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    #6 DneprDave, Jun 6, 2019
    Last edited: Jun 7, 2019
    I can't find any proof that Amsoil is any good, all there is on google is a lot of hype.
    Also, I'm not buying oil out of someone's trunk.
     
  11. MCS02

    MCS02 Moderator
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    #7 MCS02, Jun 6, 2019
    My son ran Royal Purple in his mustang. We had seen videos of test with different oils. Royal Purple did very well.
     
  12. MCS02

    MCS02 Moderator
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    #9 MCS02, Jun 6, 2019
    Where’s Bob when you need him?
     
  13. MCS02

    MCS02 Moderator
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    #12 MCS02, Jun 7, 2019
  14. Crashton

    Crashton Club Coordinator

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    #13 Crashton, Jun 7, 2019
    Oil threads can get as complex as tire threads. :confused:
     
  15. Dave.0

    Dave.0 Helix & RMW Powered
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    #14 Dave.0, Jun 7, 2019

    Not really, I think we all agree they are round and black.
     
  16. Sully

    Sully Administrator
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    #16 Sully, Jun 26, 2019
    Agreed - if you already have a few bottles, use them. :)