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  Topic Review (Newest First)
05-14-2020 05:32 PM
Easy Rider
Quote:
Originally Posted by Claimbo View Post
The ethanol is not good for the rubber hoses and connections. They suggest pure gasoline over a mix with alcohol.
There haven't been "real" rubber parts in the fuel systems for 20 years or more.
Those parts are now ethanol compatible.....synthetic rubber or neoprene or something even newer.
And who is this "they" ? Those same BMW engineers ??
05-14-2020 08:14 AM
Candoman In my local Florida station, the ethanol free gasoline is 87 octane. However, my 2105 F3, runs fine on 87 with or without ethanol.
05-13-2020 03:34 PM
Claimbo The ethanol is not good for the rubber hoses and connections. They suggest pure gasoline over a mix with alcohol.
05-09-2020 06:38 PM
Easy Rider
Quote:
Originally Posted by jmsjr1 View Post
We try to use "Premium" fuel of at least 91 octane (RON) in our 2018 RT Limited
The octane numbers used in the US are NOT RON numbers.

Oh, and I would be very interested in knowing WHY those "engineers" think that any ethanol is bad in the long term. All the evidence with engines designed for it seems to contradict that statement.
05-07-2020 09:14 AM
jmsjr1 We try to use "Premium" fuel of at least 91 octane (RON) in our 2018 RT Limited but have been told by the Service Department of a long-time Spyder dealer here in North Carolina that they have had no problems with owners running 89 octane.

I don't know where you live but if its available in your area, I would highly recommend you try and use ethanol-free gasoline. Even though your Spyder can tolerate up to 10% ethanol, we've been told by BMW automotive engineers in our area (there's a major BMW assembly plant in South Carolina) that ANY ethanol is bad over the long term.

There's an excellent website started by a motorcyclist in Wisconsin that attempts to list all the gas stations in the U.S. offering Ethanol-free gasoline. It is www.pure-gas.org. As you learn of new stations offering Ethanol-free gasoline you can add them. Similarly, if you find a station that no longer offers Ethanol-free gasoline you can remove it from the website. We've been using this website for years and find it extremely useful.
11-20-2019 12:19 PM
Easy Rider
Quote:
Originally Posted by FlyBoy21214750 View Post
I wanted to say one of his three octane number is Ok !!
Well DUH.
11-20-2019 12:01 PM
FlyBoy21214750
gaz octane

I Easy Rider

I wanted to say one of his three octane number is Ok !! Here me for my spyder the super at Costco is 91 and my spyder rolls very well.

FlyBoy2121
11-20-2019 06:08 AM
Easy Rider
Quote:
Originally Posted by FlyBoy21214750 View Post
YES

RON 93, 95, or 98
I don't think that helps at all.
Explain please.

The recommendation is to use "premium" fuel with a higher octane rating than "regular".
The numbering system used to label that isn't important.
11-20-2019 05:37 AM
FlyBoy21214750 YES

RON 93, 95, or 98

FlyBoy2121
11-19-2019 03:38 PM
Easy Rider May not find anybody here who is familiar with the RON rating system but the right answer is to use what it recommends in your owners manual and/or is listed on the fuel cap.

If 98 is a commonly available option at your pumps, my guess is that is the right one.
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