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Thread: 2013 R1200RT Gearbox/Bevel Gear Oil

  1. #1

    2013 R1200RT Gearbox/Bevel Gear Oil

    It is my understanding that we should use 75W-140 in the gearbox, and 75W-90 in the rear bevel gears, is this correct. Some older threads seemed confusing.

    All that is easy to obtain is Royal Purple MaxGear synthetic oil. But it contains a friction modifier, and it states not to be used in wet clutches. Isn't the RT clutch in the gearbox? I have had too many bikes and am getting them confused in my old age .... Ha.

    Doug
    /Doug
    2013 R1200RT
    IBA 56820
    MOA 198546

  2. #2
    Registered User natrab's Avatar
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    Quote Originally Posted by ve1iou View Post
    It is my understanding that we should use 75W-140 in the gearbox, and 75W-90 in the rear bevel gears, is this correct. Some older threads seemed confusing.

    All that is easy to obtain is Royal Purple MaxGear synthetic oil. But it contains a friction modifier, and it states not to be used in wet clutches. Isn't the RT clutch in the gearbox? I have had too many bikes and am getting them confused in my old age .... Ha.

    Doug
    I use Royal Purple 75W90 in both my trans and FD with no problems on my ‘13 RT


    Sent from my iPad using Tapatalk Pro
    Current rides: 2013 R1200RT 90th - 111k miles & 2007 R1200S
    Previous BMWs: 2016 R1200RT, 2012 R1200GS Rallye, 2011 R1200RT-P, 2007 R1200S, 2006 R1200RT

  3. #3
    Registered User lkchris's Avatar
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    Dont use 140 in anything.

    You don't have a wet clutch.

    You're free to use any gear oil in transmission, but BMW REQUIRES SAF-XO formula in the rear drive. Easiest to get this at BMW dealer.
    Kent Christensen
    21482
    '12 R1200RT, '02 R1100S

  4. #4
    Thanks for the replies.

    There are no BMW dealers in Nova Scotia ... so it is best to find alternatives if possible. Looks like the Royal Purple oil also is a substitute for the Castrol, see the attachment. RoyalPurple.pdf

    I saw a few threads discussing the heavier weight oil for the gearbox.

    Doug
    /Doug
    2013 R1200RT
    IBA 56820
    MOA 198546

  5. #5
    Quote Originally Posted by lkchris View Post
    Dont use 140 in anything.

    You don't have a wet clutch.

    You're free to use any gear oil in transmission, but BMW REQUIRES SAF-XO formula in the rear drive. Easiest to get this at BMW dealer.
    If in fact BMW REQUIRED only SAF-XO they would be required to provide it.
    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
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  6. #6
    Registered User GTRider's Avatar
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    And SAF-XO has been renamed Syntrax by Castrol.

    https://www.castrol.com/en_us/united...gear-oils.html

    Available at most FLAPS locations.

    Best,
    DeVern
    DGerber
    1983 R80ST — 1984 R80 G/S-PD — 2004 K1200GT w/Hannigan S/C — 2010 K1300GT — 2018 R1200GS
    BMWMOA#52184, AMA#271542, IBA#138

  7. #7
    Pepperfool GSAddict's Avatar
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    I tried to purchase SAF-XO at my BMW dealer.
    I was told they do not stock it, they use 75w-90 synthetic Motul.
    '
    Ufda happens..........

    Need your R11xx Hall sensor rewired? PM me.

  8. #8
    Registered User lkchris's Avatar
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    Quote Originally Posted by PGlaves View Post
    If in fact BMW REQUIRED only SAF-XO they would be required to provide it.
    And they do.
    Kent Christensen
    21482
    '12 R1200RT, '02 R1100S

  9. #9
    SURVIVOR akbeemer's Avatar
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    By “required to provide” I believe Paul means without charge, and that I do not believe BMW does.
    Kevin Huddy
    Silver City, Montana
    MOA# 24,790 Ambassador

  10. #10
    I think it is clear that it is fine to use any quality synthetic oil, as some BMW dealers themselves do not use Castrol.

    If someone could shed any light on the weight in the gearbox. Other threads have indicated some people and dealers have used the heavier weight.
    /Doug
    2013 R1200RT
    IBA 56820
    MOA 198546

  11. #11
    Registered User lkchris's Avatar
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    Quote Originally Posted by akbeemer View Post
    By “required to provide” I believe Paul means without charge, and that I do not believe BMW does.
    He’s mistaken. BMW specifies premium fuel for some models … that doesn’t mean they have to provide it free. Don’t bother attempting to explain how that’s different than differential fluid … it isn’t. SAF/XO formula fluid is readily available from multiple sources … just not USA flaps. Attempting to maintain anything German from a USA flaps is ridiculous.

    “Any quality product” is not what’s specified in the Service DVD for Hexheads/Camheads. There is no source that officially (or correctly) overrides this information, especially not BMW dealers … unless they can provide written information from BMW. Not forum geniuses, not any mechanic anywhere.
    Kent Christensen
    21482
    '12 R1200RT, '02 R1100S

  12. #12
    Fortis Fortuna Adiuvat Omega Man's Avatar
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    Quote Originally Posted by lkchris View Post
    He’s mistaken. BMW specifies premium fuel for some models … that doesn’t mean they have to provide it free. Don’t bother attempting to explain how that’s different than differential fluid … it isn’t. SAF/XO formula fluid is readily available from multiple sources … just not USA flaps. Attempting to maintain anything German from a USA flaps is ridiculous.

    “Any quality product” is not what’s specified in the Service DVD for Hexheads/Camheads. There is no source that officially (or correctly) overrides this information, especially not BMW dealers … unless they can provide written information from BMW. Not forum geniuses, not any mechanic anywhere.
    I understand your point…… I think that point has been “diluted” due to manufacturers outsourcing/globally sourcing of so much of everything.
    Probably only going to get worse……as outsourcing continues to expand especially as consumers are further confused by price differences in “will fit” repair/maintenance/rebuild purchases.
    OM
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  13. #13
    Registered User GTRider's Avatar
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    Quote Originally Posted by lkchris View Post
    SAF/XO formula fluid is readily available from multiple sources … just not USA flaps. Attempting to maintain anything German from a USA flaps is ridiculous.

    https://www.oreillyauto.com/search?q=Castrol+Syntrax

    I source quite a number of my BMW-recommended maintenance products from my local FLAPS….

    Best,
    DeVern
    DGerber
    1983 R80ST — 1984 R80 G/S-PD — 2004 K1200GT w/Hannigan S/C — 2010 K1300GT — 2018 R1200GS
    BMWMOA#52184, AMA#271542, IBA#138

  14. #14
    Registered User pappy35's Avatar
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    FLAPS = Friendly Local Auto Parts Store

    I had to look that one up.

    As for gear oil, my Camhead manual says 75W-90 that I source from my local FLBMWD in a convenient 1L bottle for less than $20. It's my understanding that Range Rover differentials use the same spec oil so maybe there's a RR dealer in your part of the world? I'm pretty anal about not deviating from spec unless there's a huge cost incentive so I use molybdenum-free motor oil and BMW-branded gear oil in my '13 RT.
    '13 R1200RT 90th Anniversary Edition

  15. #15
    Watch This!!! junkjohn's Avatar
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    Thank you. I didn't know what a flap in that context was. To many acronyms these days. I kind of just guessed on the FLBMWD.
    John Simonds
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    1975 Norton Commando 850 Roadster Mk 3
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