2 quick questions - BMW F800 Riders Forum & Registry



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  1. #1
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    Hello folks,
    Still plowing through owners manual. Does 2017 f800gs really need premier fuel? I am sure oil has been done to death, but dealer is telling me BMW oil is worth the price. Anyone have thoughts? My 70s to 90s airheads all use Dino-oil.
    Thanks,
    Tim

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  3. #2
    notacop is offline The original Schwartz Wald Troll
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    Well, Sparky. I ran regular 87 gas and in Colorado 85 ron and had no issues. Oil, BMW sales make the rich richer. Any Moto specific oil will do. I ran Honda oil and now use the cheap crap from Wally Mart Shell Rotella T6 or whatever is appropriate. At least we believe the Jaso MA means motorcycle friendly and are putting thousands of miles on our bikes using it.
    One of the erstwhile members bought BMW oil for his Airhead and forgot that Castrol 20-50 is still around for a fraction of the BMW offering.

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    My 2016 RS recommends "premium fuel" in the owner's manual. But then calls out 89 AKI ("pump") octane for use in the engine. Apparently BMW's use of the term "premium fuel" has to do with using a name-brand "top tier" gasoline and not the octane level. So re-read your owner's manual and go with whatever octane specification the book recommends. (In the U.S. we have three octane grades, 87, 89 (mid-grade) and 91 (also referred to as "premium", which is nothing but a marketing term to make you feel good about spending more on a fuel that you might not need).
    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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  7. #4
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    For the earlier models of the F800GS the ECU could be reprogrammed to permit 87 octane fuel to be used.
    I don't know if that is still and option for the later model bikes or not....
    I would not run 87 octane in an as-delivered F800GS but that's just me.... I'd be worried about pre-ignition damage.

    On the oil, yeah that's been beat to death ... synthetic or semi-synthetic "motorcycle friendly" and I think you are good to go.
    For hotter climates I'd go with 20W-50 which is an approved viscosity range for the twins.
    Blue 2009 F650GS - H-B crash bars, TT luggage rack, Pelican top case, BMW Vario Panniers & bash plate, 20mm handlebar risers, LED voltmeter, Sargent seat, MudSling, a few other trinkets ... I may be just about at the end of the farkle train  

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    My F800GS 2017 manual says e10 which is 10% max ethanol content. I have been using gas with 25% ethanol because is the only gas available around here. The bike runs fine

  9. #6
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    Quote Originally Posted by lukin1977 View Post
    My F800GS 2017 manual says e10 which is 10% max ethanol content. I have been using gas with 25% ethanol because is the only gas available around here. The bike runs fine
    Be nice if you indicated where you are located. And where only 25% ethanol is available. I think over time you may have issues.
    Kevin
    The Outpost, Silver City, Montana
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    I live in Paraguay, actually what I said is incorrect, I have access to fuel with 10% or less but no all the time. I started using e10 two weeks ago becasue I did not know about this e10 requirement. But, if I go to a trip and there is no other choice I use fuel with higher %

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    Ethanol fuels are bad for rubber/plastics in the fuel systems and can cause issues. I'd keep an eye on your fuel system to make sure you don't start to develop any leaks or start to notice misfires.
    BMW F800ST, 2010, Black, Fuzeblock, Sat Nav, BMW Tank Bag, Givi Touring Screen, 

  12. #9
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    ok, thanks. From now on I will use e10 or better unless I have no other choice

  13. #10
    notacop is offline The original Schwartz Wald Troll
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    Seems to me that BMW otta know that in some parts of the world, where they sell their bikes, that users will be forced to get whatever fuel is available.
    Would it make sense to sell a motorcycle that wouldn't work to people when their choices are limited? Unless their warranty specifically forbids use of such fuels it's tantamount to acceptance of the use.
    I remember the owners manual for my ST suggested premium gas. It said that using using other grades MAY result in reduced power and fuel mileage. I never had a problem that way. Got the best MPG's in Colorado on 85 Ron, 73 mpg's.

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    You might be interested to know that the owner's manual for the 2020 R1250 models says that the engine can now use up to !5% ethanol fuel.
    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. 

  15. #12
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    Quote Originally Posted by Richard230 View Post
    You might be interested to know that the owner's manual for the 2020 R1250 models says that the engine can now use up to !5% ethanol fuel.
    Might be a regional thing with the owners manual.

    A good number of the fuel stations that I used while touring in Germany last year only had E10 available.

    Sent from my moto g(6) play using Tapatalk

  16. #13
    notacop is offline The original Schwartz Wald Troll
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    There are phone apps that can tell you who's got alcohol free gas. They are kinda spread out. Like I said I ran low grade 85-87 5 years and 57K miles with no issues.

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    Quote Originally Posted by notacop View Post
    There are phone apps that can tell you who's got alcohol free gas...
    There might well be an App to do so but why bother? Modern engine's cope with it.



    Sent from my moto g(6) play using Tapatalk

  18. #15
    Cascade Locks, Oregon, US Roadpizza is offline Volunteer Moderator - Global
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    That maybe but, the little fuel gauge thingy is destroyed by corn juice. Ask any body in the auto industry..


    Quote Originally Posted by BoxerBits View Post
    There might well be an App to do so but why bother? Modern engine's cope with it.



    Sent from my moto g(6) play using Tapatalk
    http://www.thefcconnection.com/pictu...the_week22.htm
    BMW F800S…….
    po tym jak zatwierdzę wiadomo¶ć

    Ezekiel 23:19-20 

  19. #16
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    Quote Originally Posted by Roadpizza View Post
    That maybe but, the little fuel gauge thingy is destroyed by corn juice. Ask any body in the auto industry..
    I'll ask myself later and let you know what I tell myself.



    Ride safely.

    Sent from my moto g(6) play using Tapatalk

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  21. #17
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    Quote Originally Posted by Roadpizza View Post
    That maybe but, the little fuel gauge thingy is destroyed by corn juice. Ask any body in the auto industry..
    The fuel level float in the gas tank of my Royal Enfield was completely dissolved by corn juice-infused gas. After 4 years the low-fuel warning light stopped working. When I pulled the float out of the tank there was nothing left but the bare wires. The entire plastic float had dissolved and (I assume) it's residue burned by the engine.
    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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  23. #18
    Cascade Locks, Oregon, US Roadpizza is offline Volunteer Moderator - Global
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    Yep, my S has no gas gauge readings either. I have in recent years been able to fill with pure high test gasoline. Makes the small tools I use for the yard run without complaint.

    I mentioned the auto industry as my friend had over 40 years with GM and had mentioned the effects on the float in the tanks.
    http://www.thefcconnection.com/pictu...the_week22.htm
    BMW F800S…….
    po tym jak zatwierdzę wiadomo¶ć

    Ezekiel 23:19-20 

  24. #19
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    Depends on what the material is. I ran E10 through a single set of Webers for over 20 years and and nearly 100k miles and they worked just fine that whole time. Never changed floats, gaskets, o-rings or anything in that whole time aside from jetting as the engine changed over the years. Same can be said for the plastic float gauge in the gas tank of that car.

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