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Thread: 1999 1100RT gear oil

  1. #1

    1999 1100RT gear oil

    hi all.. got paranoid with my FD.. so.. i drained gear oil..drain plug looks good, no metal.. thank god.. the gear oil only has 1k on it.. i put back in.. . i used 75/90, some spilled and I'm low .. can i top off with 75/140? thanks.

  2. #2
    Left Coast Rider
    Join Date
    Nov 2011
    Location
    Vancouver, British Columbia, Canada
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    3,115
    Nope.

  3. #3

  4. #4
    75w140 is out of spec. Sure - a tiny bit might not make much difference but the correct gear oil is available at virtually any auto parts store, Walmart, k mart, or Ace or True Value hardware store in the United States.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://web.bigbend.net/~glaves/

  5. #5
    thank you Paul.. i will get some tomorrow to top off.. I've always used bmw.. can you give me the specs to stick to? 75/90 GL4? thanks

  6. #6
    Quote Originally Posted by RICH7196 View Post
    thank you Paul.. i will get some tomorrow to top off.. I've always used bmw.. can you give me the specs to stick to? 75/90 GL4? thanks
    GL5 only, either 80W90 or 75W90. I prefer Castrol brand "Limited Slip" 80W90 because the the high sulfur content. Penzoil is also OK and may be easier to find.
    Last edited by PGlaves; 08-11-2019 at 01:31 PM.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://web.bigbend.net/~glaves/

  7. #7
    thank you Paul

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