What is the recommended engine oil for a 2010 BMW F650GS - BMW F800 Riders Forum & Registry



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  1. #1
    TheBeast's Avatar
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    My Haynes manual states that I should use SAE 10W/40 mineral motorcycle oil of API classification SF, SG or SH is that correct or should I use something else? My bike has a little under 10K on it.

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    Ridealot's Avatar
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    Another oil thread
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    Use what oil your owners manual recommends.
    Richard - Current bikes: 2016 BMW R1200RS, 2018 16.6 kWh Zero S, 2011 Royal Enfield Bullet 500 Classic, 2009 BMW F650GS, 2005 Triumph T-100 Bonneville, 2002 Yamaha FZ1 (FZS1000N) and a 1978 Honda Kick 'N Go Senior. 

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  6. #4
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    Hi Nicole. Questions about oil should be one of the simplest to answer. Welcome to the f800 Forum. Richard's response is probably the easiest to follow. I strongly encourage you not to check this thread again, unless:

    1. You can't believe how people can get so worked up about minutiae
    2. You wish your BMW bretheren/sisteren could all "get a life"
    3. Oil makes your knees go weak
    4. You really enjoy watching alley cats fight
    5. You have taken a vow of silence until your oil dilemma is resolved

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    Quote Originally Posted by TheBeast View Post
    My Haynes manual states that I should use SAE 10W/40 mineral motorcycle oil of API classification SF, SG or SH is that correct or should I use something else? My bike has a little under 10K on it.
    Haynes manual? Why would you trust that over the BMW Owner's Manual which came with your bike? Or if you didn't get one is easy to download?

    Clearly what you must do because the only reason you exist is support your motorcycle dealer is to go to your dealer and buy any and everything he offers you.

    Or you could go to Walmart or most any store and buy Shell Rotella-T in synthetic 5W-40 (about $25/gallon) or refined 15W-40 (about half the 5W-40 price). If you ride above 40°F or so save your money and buy the 15W-40. My F800S shifts better with the cheap stuff than with whatever super duper BMW brand the dealer used. Rotella meets all of BMW's published standards.

    "Mineral" and "synthetic" are not motor oil performance standards. Its the same sort of thing promoted for watches 40 years ago. "17 jewels" would have you believe it was a better watch than a "14 jewel" movement. Neither really said much about how accurate of time the watch would keep. And they did the same thing with transistor radios boasting the number of transistors. Again a good design could do better with 10 transistors than a poor design with 20. No doubt a better radio could be made with 20 transistors but just because 20 transistors were used does not ensure a better radio. And so it goes with motor oil. A superior motor oil can be made using synthetic processes but just because synthetic processes were used is no assurance of a superior product.
    2016 Yamaha FJR1300A; 2016 Beta 430RS; 2007 BMW F800S; 2009 Husaberg FE450; 2016 Subaru Outback; 2018 F150; 2013 Tesla Model S 85; 1983 Porsche 928S; 9 cats 

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  10. #6
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    15-50 fully synthetic is my choice, it protects better when hot and stops the post fast run rattles! OK I'm also into Tribology and understand why the manufacturers use thin 'low drag' oil to improve fuel economy at the expense of potential wear, it's a balancing act, most first owners won't keep it long enough to discover a problem, second, third and beyond aren't the manufacturers concern...

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    So BMW have now decided that 15w-50, as I've been running, is the better grade for the engine, thanks for that

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    Not only that, but the oil is semi-synthetic (my owners manual says to use nothing but non-synthetic oil) and now comes from Italy (instead of the U.S. or the UK, as in previous US BMW oil versions). I wonder how much of the oil's $11 price is the result of shipping costs?
    Richard - Current bikes: 2016 BMW R1200RS, 2018 16.6 kWh Zero S, 2011 Royal Enfield Bullet 500 Classic, 2009 BMW F650GS, 2005 Triumph T-100 Bonneville, 2002 Yamaha FZ1 (FZS1000N) and a 1978 Honda Kick 'N Go Senior. 

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    You wonder why you get smart ass answers? Look in your owner's manual. Beside the fact, this question has been asked so many time it have become a joke. You have all kinds of resources to tell you the benefits of synthetic vs mineral.

    The original was 10-40 mineral oil. Now it is 15-50 semi synthetic. The bikes haven't changed, probably BMW's contract with what ever oil company has.

    Change whatever Motorcycle oil you choose within the recommend mileage and you will be fine. Want to save a few pennies, choose an appropriate auto oil.

    You just bought an expensive motorcycle and some of you are wondering how save a few bucks. Buy a cheap bike and replace every few years.

  20. #14
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    Quote Originally Posted by Neiljohn View Post
    So BMW have now decided that 15w-50, as I've been running, is the better grade for the engine, thanks for that
    No, that is a Castrol advertisement. If the contents of your owner's manual have changed then BMW would publish a TSB.
    2016 Yamaha FJR1300A; 2016 Beta 430RS; 2007 BMW F800S; 2009 Husaberg FE450; 2016 Subaru Outback; 2018 F150; 2013 Tesla Model S 85; 1983 Porsche 928S; 9 cats 

  21. #15
    N4HHE's Avatar
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    Quote Originally Posted by itsatdm View Post
    You wonder why you get smart ass answers? Look in your owner's manual. Beside the fact, this question has been asked so many time it have become a joke. You have all kinds of resources to tell you the benefits of synthetic vs mineral.
    But there are no guaranteed inherent benefits of synthetic motor oils. Marketing wants you to believe "synthetic" is all you need to know to open your pocketbook and pay pay pay! The truth is that superior motor oils can be made with synthetic processes but just because synthetic processes were used to manufacture does not ensure a superior product. "Synthetic Motor Oil" has almost as little meaning as to whether its appropriate or superior as does "Red Motor Cycle".

    The original was 10-40 mineral oil. Now it is 15-50 semi synthetic. The bikes haven't changed, probably BMW's contract with what ever oil company has.
    Again, synthetic, semi-synthetic, are not performance specifications.

    Change whatever Motorcycle oil you choose within the recommend mileage and you will be fine. Want to save a few pennies, choose an appropriate auto oil.

    You just bought an expensive motorcycle and some of you are wondering how save a few bucks. Buy a cheap bike and replace every few years.
    You are wrong in assuming more money == more better. I could buy any motorcycle in the BMW dealership. I bought an F800S. It was the most appropriate. Haven't traded it since, so perhaps I still believe its the best motorcycle out there.

    It didn't shift well with the blessed genuine BMW most expensive oil the dealer had. Looked around my garage and found an old gallon of Mobil Delvac Super 1300 15W-40. Isn't going to hurt anything, costs almost nothing to try. I like it. Rotella is a bit easier to come by, I'll try that next time.
    2016 Yamaha FJR1300A; 2016 Beta 430RS; 2007 BMW F800S; 2009 Husaberg FE450; 2016 Subaru Outback; 2018 F150; 2013 Tesla Model S 85; 1983 Porsche 928S; 9 cats 

  22. #16
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    Quote Originally Posted by N4HHE View Post
    No, that is a Castrol advertisement. If the contents of your owner's manual have changed then BMW would publish a TSB.
    Not really "a Castrol advertisement" as it's on the BMW UK Motorrad website as BMW's current recommendation. If you're not using the recommended oil and something happens to the engine it "can" create a whole raft of problems getting any warranty repairs authorised, and I understand if there are serious issues BMW does send the oil to be tested.
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  23. #17
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    great explanation for string length!!

  24. #18
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  26. #19
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    Quote Originally Posted by Neiljohn View Post
    15-50 fully synthetic is my choice,
    So which brand, where and what's the price,,. Ive had trouble locating 15-50 Fully synthetic especially locally, so far all Ive used is the Advantec blend that the dealer sells?

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