I won't run E10 fuel in the Mini because it's 11.0:1 and tuned for 98.
However my `97 Jeep Cherokee loves E10, which is 93-94 RON octane. I use it because it pings on 91unleaded, and the Jeep was designed for E10 type USA fuels anyway. I'm too cheap to put 95 or 98 in it.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Right, e10 is blended 91. So the RON of e10 is something similar to 95 (less or more) but straight alcohol is something like 110-113 RON. Personally I wouldn't bother with alcohol blends unless I was setting a car up to take advantage of the RON, which would require e85 or more.

I was running United 100 for a while , I do know it is blended with ethanol. Car ran well & could give it more advance up top(megajolt) But after a couple of weeks found the fuel cap seal turned to jelly- replaced the cap & a week later same thing....Back to BP ult thanks

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A proper mini redlines at 13 500 rpm

Its been a few years since I last posted in this thread, but just to re-iterate, I've been running my Moke on E10 (United's Premium 98 with ethanol) for more than 5 years with no problems. Its the cheapest way to buy 98 octane, which the Moke seems to run best on, and it completely solves the problem of running-on that occurs using non-ethanol fuel. It smells better too.

Tim

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1951 Morris Commercial J Type Van
1955 BSA C11G
1961 Morris Mini Traveller
1969 Triumph TR6R
1977 Leyland Moke Californian