Mother of all oil-threads

Discussion in 'GS Boxers' started by tagesk, Mar 27, 2013.

  1. lkchris

    lkchris Albuquerque

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    It is for German cars for sure as it meets Mercedes 229.5 and BMW LL-01. It's ok for pre-diesel particulate filter diesels, but not for 2007-on diesels. I think it's sad BMW doesn't publish a similar spec for motorcycle oils.

    I think all the talk of 10w-40 in winter and 20w-50 in summer is pretty silly, as BMW also approves 5w-50 and 10w-50 and these are obviously year-around use oils. They're synthetics, of course.

    In my boxers I use BMW's recommended oil, which in the USA is called Castrol Power RS Racing 4T, 10W-50. I may switch to Motorex Boxer 4T just for fun. http://motorexusa.com/musa/prod_detail.asp?id=9
    #41
  2. marchyman

    marchyman DR and GS

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    For those in the US... Not saying this oil is good, bad, or indifferent, only that it meets the BMW wethead specs for about $8/qt. It's probably called something else in other areas of the world.

    [​IMG]
    #42
  3. Racegun

    Racegun Single Track Mind!

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    wait for them...............w a i t f o r t h e m........................................................

    ,,,..........................


    ROYAL PURPLE:deal
    #43
  4. lkchris

    lkchris Albuquerque

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    Yes, it's called Power 1 Racing 4T.

    Can you imagine how long it would take for Mobil to sue in reaction to "1?"
    #44
  5. lkchris

    lkchris Albuquerque

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    Cause they sell it at PepBoys, right?

    Not interested in Spectro, Royal Purple, and various boutique oils. Bigger is better when it comes to engineering staffs.
    #45
  6. TuefelHunden

    TuefelHunden Been here awhile

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    Look at the last few posts. We are getting right into the middle of specific brands.
    BMW RECOMMENDS and does NOT REQUIRE!
    So we put our recommendation into a sticky topic like we were given direct access to God about which oil to pick????
    #46
  7. Racegun

    Racegun Single Track Mind!

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    Kent have you researched RP?
    Pepboys, I never have nor will i ever step foot there. I as a tribologist, and after spending many hours at university studing same, simply wanted to share what I KNOW is better than any ICE lube. Say what you want, be condescending if you must thats is all fine. For the few who look into RP, they will find what took me years of skepticism to over come ( i used to work for mobil and sold Mobil 1). All lubricants are made opposite the way way RP is made.

    If you have done years of research and know something I do not........ lets hear it. After all this is the place to discuss such things. I personally could care less what ICE lube people use. I only wanted to shine a light on a dark and secretive subject. Thank you for your comment
    #47
  8. lkchris

    lkchris Albuquerque

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    And for yours--learned some things.
    #48
  9. Chat Lunatique

    Chat Lunatique aka El Gato Loco

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    Splendid insight into biker ritual behaviour and pack purchasing mentality. Well done sir!

    That anthropology/tribalist degree was money well spent! Even landed you a gig selling oil too I see. Pray tell, when you worked for Mobil selling oil, was it at the gas station at 5th and Main? :lol3
    #49
  10. justinallen03

    justinallen03 Been here awhile

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    I studied tribology as well in my grad work. Pretty interesting subject that really never gets touched in much undergrad mechanical engineering work.

    Admittedly, the lubrication classes I took and research I was involved in was related to turbomachinery, so I don't know everything about auto applications. I know the manufacturing process for royal purple is different than most other synthetic oils, but I am interested to know why it is better (other than, what I believe, is that it doesn't involve the use of fossil fuels to create).
    #50
  11. Gun Smoke

    Gun Smoke Banned

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    My 08 GS gets walmart brand 10-40 every 25 or 30 thousand miles just like the 1150 did. Both bikes have run flawlessly. I imagine I'll do the same with the LC exchanging for 5-40. My 1150 had the valves adjust once in the 80+ thousand miles I owned it. Neither bikes have ever seen the inside of a BMW service center.

    My point. You guys worry too damn much. If it blows up buy another. You'd have a hard damn time blowing one up though imo.
    #51
  12. cjack

    cjack Been here awhile

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    Well, I think it is true that most bikes die of built in QC issues which have nothing to do with what/how/when kind of oil you use in them. I think 25K intervals is a bit too long though :)
    #52
  13. Gun Smoke

    Gun Smoke Banned

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    I've got a john deere lawn mower I've used nine years that's never had an oil change. I check the level maybe once a year.
    #53
  14. Racegun

    Racegun Single Track Mind!

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    OH! Wise guy hey.....whoooop whooop NYUCK NYUCK NYUCK:rofl

    It was out of the back of my broke back mountain covered wagon...you silly boy:deal
    #54
  15. tagesk

    tagesk Tuscan rider

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    After four pages we have still not settled the following:

    On the wethead, cay an owner safely use

    • 10w-40?
    • 15w-50 (in summer, say above 35C?)
    • 20w-50 (in summer, say above 35C?)
    The only reasonable answer, so far, is "No on all accounts, because the manual says 5W-40".

    All other answers must be qualified!

    If we're unable to settle this now, just imagine the number of oil-threads we will have
    the coming years :puke1


    [TaSK]
    #55
  16. El Gato

    El Gato Been here awhile

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    While I love a good oil thread as much as the next guy, I'm not sure what sort of resolution you're hoping to reach. There is only one definitive source of information at the moment (the owner's manual) and it's not very definitive. Anything else posted here will be even more speculative than that. You can choose which of the speculations you're most comfortable with, but that will hardly be a resolution to your questions.
    #56
  17. cjack

    cjack Been here awhile

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    Use the 5W40 which works well in my K12S.
    As far as settling this, I don't think that'll ever happen. Folks just like to talk about oil. I do.
    #57
  18. Gun Smoke

    Gun Smoke Banned

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    BMW had to use the word suggested because some dumb ass; probably one of the idiots fretting over this thread would run their bike bone dry rather than using a 10w if 5w wasn't available where they are. The whole discussion is ridiculous. They recommend 5w. What's the big fucking deal.
    #58
  19. fabiox

    fabiox Been here awhile

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  20. TuefelHunden

    TuefelHunden Been here awhile

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    I agree with what you said. There is one thing that I hear quite often in these threads which triggers a rhetorical question, "how do you know it works well?" For that matter, how do you know that it isn't shortening the life of your engine by thousands of miles? I do know that some oils will make your transmission shift smoother and some oils will make your clutch slip, but most of the time you have no indication of what it is doing. I know of guys who did religious oil analysis. Most just saw what they wanted to see, because most guys I know don't put crap oil into their beloved MC just to run an oil test. Picking an oil is a lot like religion. It is based more on faith than facts.
    #60