R1200RS + R1250RS Forum
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Wed Jul 17, 2019 6:28 am
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Hi All |
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Zitat von Holger im Beitrag #2I'm just back from a (fantastic) trip to Germany on my RS, and often used E10 I think - I must admit I never realised there might be an issue with it - should I be worried??
KC100->CB100N->CB250RS--------->DL650AL2->R1200RS
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In the US, finding gas that isn't 10% ethanol is a real chore. My 2003 R1100S has been run on that for it's entire life. I haven't heard of any valve problems on BMW's because of that. 2017 R1200RS- 23,000 mi. 20 mo. |
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Zitat von KevKP im Beitrag #1 Lucky you. We have been suffering with 10% smog gas for years in California and now it has encroached into many other areas of the U.S., apparently as a way to line the pockets of corn farmers and ethanol refiners. It may be great for corn farmers but it sure isn't all that great for use in internal combustion engines. However, the stuff does work and won't really kill your engine. BMW even approves the formulation in their rider's handbook, but limits the mixture to 10% ethanol. Unfortunately, it does cut fuel mileage by something like 5-10% and I don't have a clue what the stuff does for the engine's power. Also, it hates to sit around for more than a month or so before sucking up moisture from the air and turning into something nasty. I might add that when 100% real gasoline becomes hard to find just wait for its price to start to skyrocket. Last Saturday I was in my local Ace Hardware store and noticed a one gallon can of real gas being sold there designed for lawn mowers and the like. Its price was $25 - as compared with $3.85 for the 10% stuff at the gas station, which includes about 65 cents in taxes! What a ripoff!
Current motorcycle collection: 2002 Yamaha FZ1; 2005 Triumph Bonneville T-100; 2011 Royal Enfield Bullet 500; 2009 BMW F650GS; 2016 BMW R1200RS; 2018 Zero S 16.6 kWh
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Zitat von Freddyfruitbat im Beitrag #3 Don't worry - here is an excerpt from the user manual: Fuel Recommended fuel grade Super unleaded (max. 10 % ethanol, E10) 95 ROZ/RON 89 AKI But to make my "Darth Vader Edition" really the fastest, she only gets the best, of course
Regards,
Holger Moderator and Admin |
Zitat von Holger im Beitrag #6Zitat von Freddyfruitbat im Beitrag #3 Quite right, leave the plant based fuel to the floral brigade! |
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Zitat von KevKP im Beitrag #8 I owned both a year 2000 1100R and a 2002 1150R. Both bikes ran OK on whatever California was using in their smog gas at the time, although the 1100 contributed to the smog by sucking up a liter of oil every couple of thousand miles, probably due to my poor break-in procedure back then. I now know not to take it too easy on a new BMW engine.
Current motorcycle collection: 2002 Yamaha FZ1; 2005 Triumph Bonneville T-100; 2011 Royal Enfield Bullet 500; 2009 BMW F650GS; 2016 BMW R1200RS; 2018 Zero S 16.6 kWh
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Zitat von KevKP im Beitrag #1 I am not convinced one tank of gas will cause that problem. I owned an R1150GS from 2001 to 2010. It had over 50,000 miles when I sold it. It travelled the Alps from France to Slovenia, often on E10 fuel, sometimes on 91 RON fuel. The cause of exhaust valves burning is usually the engine running too lean after the catalytic converter has been removed. In extreme cases I have seen melted pistons and crankcases where a new exhaust has been fitted without any adjustment to the fuelling. |
Zitat von wessie im Beitrag #10 Same here. I don't like ethanol, but I have not heard of anyone having a problem like the one mentioned in the original post. Most of the problems you hear in older vehicles has to do with the rubber and plastic pasts. A couple examples are fuel lines and the rubber damper on the old brick K bike fuel pumps.
Lee
2016 R1200RS Iowa, USA |
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All I can say is that the first (and only) question the mechanic asked me after he stripped the heads was had I filled up with E10. |
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Sorry to hear of your valve problems, KevKP. On a related note, there's an app: "Pure Gas" that helps you track down non-ethanol serving gas stations. Here in the US, very few "brand name" stations sell it, mostly smaller ones. The main concern for E10 seems to be small equipment, such as weed trimmers, chain saws, lawn mowers, etc. Even then, it usually takes a while for that problem to surface. |
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Zitat von KevKP im Beitrag #12 90k you say, and you think the last tank of fuel was the main factor in engine wear? |
