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I have run my 1982 CX500E on E10 with no problems but when my mileage drops and the fuel is likely to sit around for a few weeks then I use premium (max 5% ethanol). The problem with E10 is that it goes off pretty quickly, within a few weeks I think, whereas premium can last quite a bit longer. Come summer , when my mileage will be right up and the fuel won’t have a chance to go stale then I’ll switch to E10.
 

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I would expect the vast majority of us use E10. Most Regular gas at gas stations in the US is 10% ethanol. I do and have no particular complaints.
 
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Been using e10 when riding around the continenent for years. When the switchover happened here in the UK, I used it straight away (actually, most of the stations switched to it a month early!), and i've had no issues with running e10 on any of my vehicles, and only 1 of my 8 vehicles is YOUNGER than 1991.
 

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In Oz.... we still have a choice....and can easily avoid it if we choose to....any fuel with ethanol added needs to be labelled at the pump...and has disappeared from many stations....
 

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Been using e10 when riding around the continenent for years. When the switchover happened here in the UK, I used it straight away (actually, most of the stations switched to it a month early!), and i've had no issues with running e10 on any of my vehicles, and only 1 of my 8 vehicles is YOUNGER than 1991.
Lol...some of those E europe bikes were probably tuned to run on Vodka or Slivovitz(a). ..😄
 

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You know, I visited for a night a b+b in Croatia one time, and as soon as I got there, the host just wanted me to drink Slivovitz with him until late. Which reminded me of my time in Ukraine where the host there just drowned us in Vodka. The thing is, that stuff is so cheap in the native country. It was like £2.50 per 1l bottle at the customs coming back into Poland. I bought 3 cartons of cigarrettes for £9 in the town of Orane/Оране in Ukraine.

Well, anyway...... enough reminiscing of when I was single, and childless. Hehe- Iooking at the official MZ manuals, the MZ's are stated to work at no lower than 79 octane...Or well, 79 octane is recommended. I'm not sure what standard of Octane was used however, so it might seem lower than it is in regards to RON.

I forgot to mention in my previous post that it was only in September (officially) last year that standard 95 octane was changed from e5 to e10. 98 octane is still e5, but of course- i'm a miser, petrol is as expensive as it is. And eventually the 98 will change too in a few years- which is something people hang onto saying "buy 98 then". The problem is it won't be around forever either, if indeed you do have problems. And.. well e10 works perfectly fine for me and my applications. In many parts of the world, e10 has been used for at least a decade.
 
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It is best not to leave E10 in a tank or carburetors during storage. It absorbs water. It can cause 'varnish' in the carbs. In the United States we have a product called Sta-Bil that we add to the fuel and run it through the carbs before winter storage (in the northern states). There are other stabilizers but Sta-Bil seems to be the most popular and readily available.
 

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Discussion Starter · #10 ·
It is best not to leave E10 in a tank or carburetors during storage. It absorbs water. It can cause 'varnish' in the carbs. In the United States we have a product called Sta-Bil that we add to the fuel and run it through the carbs before winter storage (in the northern states). There are other stabilizers but Sta-Bil seems to be the most popular and readily available.
Hi,
Thank you that's really helpful to know and appreciated - I'll see if we have Sta-Bil or something similar in UK
 

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1978 CX500 "The Grub", 1983 GL650I "Nimbus"
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'84 CX650E that is evolving into a GL500
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It is best not to leave ANY fuel in the carbs or tank during storage. It is more common than you would think for something to prevent taking it back out of storage again for a few years and any gasoline will turn first to a gel and then to varnish as it evaporates. And besides that, any moisture that gets into the tank (a couple of drops when you fill up in the rain, condensation from moist air entering the tank on damp days &c) will end up on the bottom of the fuel because it is heavier so if you don't drain the tank so the water can evaporate it will find another way out (ever wonder why tanks rust out near the bottom?)
 
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