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Thread: Change in recommended oil weight (Yay an oil thread!)

  1. #1
    Registered User natrab's Avatar
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    Change in recommended oil weight (Yay an oil thread!)

    So, long story short, I couldn't find the manual to my 2013 R1200RT so I downloaded a new one from the BMW site. My old manual had a range of oil weights and recommended temperatures on it before. Now it just says 15W-50. I've been using Castrol Power 1 10W40 for 98,000 miles on this bike and nothing has gone wrong (after all, it used to be in the old manual chart as acceptable for anything > 14 degrees F).

    Does this mean I should change to the heavier weight? My bike still runs like a top. I could just as easily order the 10W50 which would up the weight a little bit at temp, since the manual seems to imply it.

    Let's leave brands out of this. Just speculating about the BMW recommended weight. I find it strange that they recommend 15W anything for all bikes now when in the old manual is said 15W40+ was only for 32 degrees F and up.
    Current rides: 2013 R1200RT 90th - 98k miles & 1996 R850R - 28k miles
    Previous BMWs: 2016 R1200RT, 2012 R1200GS Rallye, 2011 R1200RT-P, 2007 R1200S, 2006 R1200RT

  2. #2
    Quote Originally Posted by natrab View Post
    So, long story short, I couldn't find the manual to my 2013 R1200RT so I downloaded a new one from the BMW site. My old manual had a range of oil weights and recommended temperatures on it before. Now it just says 15W-50. I've been using Castrol Power 1 10W40 for 98,000 miles on this bike and nothing has gone wrong (after all, it used to be in the old manual chart as acceptable for anything > 14 degrees F).

    Does this mean I should change to the heavier weight? My bike still runs like a top. I could just as easily order the 10W50 which would up the weight a little bit at temp, since the manual seems to imply it.

    Let's leave brands out of this. Just speculating about the BMW recommended weight. I find it strange that they recommend 15W anything for all bikes now when in the old manual is said 15W40+ was only for 32 degrees F and up.
    Other than BMW's branded Advantec 15w50 is darn hard to find. Not impossible but not very many choices.
    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/

  3. #3
    Registered User pappy35's Avatar
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    After that many miles I'm guessing stick to what you know. I got mine with only 6k on it so, after the first 6k with 20W-50, I switched to Motorex because it's one of the few that offer the weight called for in the '13 owners manual.
    '13 R1200RT 90th Anniversary Edition

  4. #4
    SURVIVOR akbeemer's Avatar
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    Quote Originally Posted by PGlaves View Post
    Other than BMW's branded Advantec 15w50 is darn hard to find. Not impossible but not very many choices.
    I wonder why they specify a weight that tends to drive people to buy their own very special oil?
    Kevin Huddy
    The Outpost, Silver City, Montana

  5. #5
    SURVIVOR akbeemer's Avatar
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    Quote Originally Posted by natrab View Post
    So, long story short, I couldn't find the manual to my 2013 R1200RT so I downloaded a new one from the BMW site. My old manual had a range of oil weights and recommended temperatures on it before. Now it just says 15W-50. I've been using Castrol Power 1 10W40 for 98,000 miles on this bike and nothing has gone wrong (after all, it used to be in the old manual chart as acceptable for anything > 14 degrees F).

    Does this mean I should change to the heavier weight? My bike still runs like a top. I could just as easily order the 10W50 which would up the weight a little bit at temp, since the manual seems to imply it.

    Let's leave brands out of this. Just speculating about the BMW recommended weight. I find it strange that they recommend 15W anything for all bikes now when in the old manual is said 15W40+ was only for 32 degrees F and up.
    Maybe mix 10W-40 and 20W-40 in a 50:50 ratio; or, alternate between the two weights at oil changes; or, keep on doing what you have been doing. I'd go with the "keep on doing what you have been doing" option.
    Kevin Huddy
    The Outpost, Silver City, Montana

  6. #6
    i should be out riding! wyman.winn's Avatar
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    Cool

    i have been using 15w50 in my 13RT since the 600 mile service...at 107000 miles there have been zero motor issues and she runs like a top...oil comes in the silver jugs full syn...change every 6000 miles rain or shine...
    ~wyman~


    2013 BMW R1200RT - Sassy - Fluid Grey Metallic

  7. #7
    Quote Originally Posted by wyman.winn View Post
    i have been using 15w50 in my 13RT since the 600 mile service...at 107000 miles there have been zero motor issues and she runs like a top...oil comes in the silver jugs full syn...change every 6000 miles rain or shine...
    I suppose I am thought to know who packages in silver jugs but at the moment it escapes me. I know that Advantec comes in dark grayish blue bottles. So what source are you using for the silver jug oil?
    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/

  8. #8
    Registered User pappy35's Avatar
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    Motorex comes in 4 liter jugs!
    '13 R1200RT 90th Anniversary Edition

  9. #9
    Registered User natrab's Avatar
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    It does seem to be a change in favor of their branded oil. Frankly, I would rather just switch to using Rotella T6 as it's the cheapest and I use it in all my other vehicles. I may do it anyway since anything with a warm weight of 40 seems to be fine. The only time I think running 50 in it is in the summer where we crest 100 degrees F.
    Current rides: 2013 R1200RT 90th - 98k miles & 1996 R850R - 28k miles
    Previous BMWs: 2016 R1200RT, 2012 R1200GS Rallye, 2011 R1200RT-P, 2007 R1200S, 2006 R1200RT

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    I love OIL threads...

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    Quote Originally Posted by natrab View Post
    It does seem to be a change in favor of their branded oil. Frankly, I would rather just switch to using Rotella T6 as it's the cheapest and I use it in all my other vehicles. I may do it anyway since anything with a warm weight of 40 seems to be fine. The only time I think running 50 in it is in the summer where we crest 100 degrees F.
    It is Rotella T6 here.

  12. #12
    Registered User jandhumphreyme's Avatar
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    May not be much help.

    My 2018 R1200rt calls for 5w-40 all temperatures. So 40 weight oil is acceptable.
    My 2011 R1200r calls for 5w-40 or 5w-50 from minus 4F up, 10w-40 or 10w-50 14F up, and 15w-40 32F up. So either 40 weight oil or 50 weight oil are acceptable at upper end, and as lowest temperature increases, so does viscosity for starting to increase startup protection.

    I don't think there are any BMW engineers here, so anyone's input here is just speculation, mine included, so for us to answer your question "Does this mean I should change the weight of oil", is just opinion.

    I would not worry much, as you stated, your manual had 40 weight listed as a proper weight, just continue to run it and don't worry about it. WTFK's what goes on in the BMW owners manual department, but their lack of consistency amazes me sometimes. Next time your at a dealer, inquire if there's been an official change posted, however if there was I'm sure it would have been posted here before with all the requisite hobknobbery.

    Good luck mate 98,000 miles is awesome, how do you find so much time to ride.
    So often times it happens that we live our lives in chains
    And we never even know we have the key

  13. #13
    i should be out riding! wyman.winn's Avatar
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    Quote Originally Posted by PGlaves View Post
    I suppose I am thought to know who packages in silver jugs but at the moment it escapes me. I know that Advantec comes in dark grayish blue bottles. So what source are you using for the silver jug oil?
    Mobil 1, 15w50 from Amazon.com...
    ~wyman~


    2013 BMW R1200RT - Sassy - Fluid Grey Metallic

  14. #14
    Quote Originally Posted by wyman.winn View Post
    Mobil 1, 15w50 from Amazon.com...
    Is that a JASO MA-2 oil?
    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/

  15. #15
    i should be out riding! wyman.winn's Avatar
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    Quote Originally Posted by PGlaves View Post
    Is that a JASO MA-2 oil?
    nope...FTR, my 13RT does NOT require JASO MA-2 type oils...it requires of a viscosities API SF/ACEA A2 or better...
    Last edited by wyman.winn; 10-16-2019 at 07:17 PM. Reason: added oil requirements from owner's manual
    ~wyman~


    2013 BMW R1200RT - Sassy - Fluid Grey Metallic

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