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Transmission Additive?

Discussion in '348/355' started by 355tsr, Apr 6, 2010.

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  1. 355tsr

    355tsr Formula Junior

    Mar 9, 2010
    322
    #1 355tsr, Apr 6, 2010
    anyone ever used any of the "slicker quicker" additives in the manual Transmission ie Z-Max, Lucas ect. I need to top off my Trans but I don't need much. might this help with a cold Trans Shift (2nd) or does the Fcar reject such.
     
  2. AceMaster

    AceMaster Three Time F1 World Champ

    Feb 6, 2009
    34,787
    Ontario, Canada
    Full Name:
    Mike
    #2 AceMaster, Apr 6, 2010
    Last edited: Apr 6, 2010
    Personally, I wouldn't anything.

    You should use Redline 75W90NS gear oil and you should be fine.

    Some guys use the Redline Superlight Shockproof.

    I switched to the Redline 75W90NS and found a huge improvement in shifting (when the oil is warmed up, not as much when it is still cold)
     
  3. junglistluder

    junglistluder F1 Rookie
    Owner Silver Subscribed

    Mar 23, 2007
    3,631
    VA
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    Brendan
    #3 junglistluder, Apr 6, 2010
    I used the Redline 75W90 gear oil with BG LSII friction modifier for the LSD.
     
  4. 355tsr

    355tsr Formula Junior

    Mar 9, 2010
    322
    #4 355tsr, Apr 6, 2010
    do you find the friction modifer helping when shifting or only on cornering.
     
  5. junglistluder

    junglistluder F1 Rookie
    Owner Silver Subscribed

    Mar 23, 2007
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    Brendan
    #5 junglistluder, Apr 6, 2010
    Honestly, I changed the oil at the same time as adding the friction modifier, so I can't really tell which was the bigger improvement over stock. I'm guessing it was the Redline gear oil.
     
  6. FandLcars

    FandLcars F1 Rookie

    Aug 6, 2006
    3,057
    Tempe, Az
    Full Name:
    Rick Schumm
    #6 FandLcars, Apr 6, 2010
    The story I've read here on Fchat from 348 owners is that some gearboxes' limited slips chatter around corners, when using Redline 75/90NS. If that happens, adding a bit of the friction modifier will eliminate the chatter. I changed my box to the 75/90NS, and didn't have any chatter, so I didn't use the modifier. I don't think there's a need to use it, if you don't have a chatter problem with the NS oil.
     

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