E10 Crap

As far as I know. E10 was introduced in Europe back in 2013 (ish) and most manufacturers specify that their bikes are E10 compatible. See below some examples I found online.

• Honda for instance say all bikes made since 1993 are safe, while Honda said everything post-1993 is compatible, although carburettor-equipped models could experience poor driveability in cold weather
• Harley-Davidson say all bikes made since 1980 are fine
• BMW say every bike they’ve ever made will be alright as long as you get the correct octane.
• Yamaha and Triumph both said that all models from 1990-on are compatible with E10,
• Suzuki models made after 2002 are compatible with E10 and those made after 1992 might be but owners should seek advice.
• Ducati said that their Multistrada 620 and 1000 models were not compatible with E10 fuel, with tanks known to expand or leak in markets with ethanol-rich fuel.
• Kawasaki said that models made from 2006-on would be ok on E10 but advised customers not to use the fuel in bikes that weren’t specifically approved.

I've seen some E10 additives (protectors) in Halfords. Worth a try? It says multi dosage so I'm not sure how many shots you'd get out of 250ml bottle.

https://www.halfords.ie/motoring/engine-oils-fluids/fuel-oil-additives/wynn%27s-specialist-e10-protector-multi-shot-581494.html

Initially I found them on MCN. motorcyclenews.com but a quick google search should bring up manufacturer's official website.

• https://www.honda.co.uk/motorcycles/my-bike/E10-fuel-update-2021.html
• https://bikes.suzuki.co.uk/news/standard-petrol-is-changing-to-e10-know-your-fuel/
• https://www.kawasaki.co.uk/en/news/Greener_E10_fuel_and_what_it_means_for_you?Uid=08F3C1kJXwtfWQ4OC15RXFoJCVBaUF4LDlkKX1AJUVkMWVs
• Can't find an official Suzuki website with the info.
• https://www.gov.uk/check-vehicle-e10-petrol this is good info. you can directly put in your make/model and check compatibility.
• 
  

I also have late 80's yamahas which fall into the non compatibility category.

Has anyone experimented with suitable additives?

That is a huge expense to get the dilution to 5% (which still contains ethanol, just less of it). Water is a lot cheaper, or free. The only expense is that when you extract all the ethanol from your fuel with water you will be 10% down on volume. It makes sense to do it before filling the tank prior to storage in the winter if you not going to use the bike regularly.

Yes. It is ieasy to exctract the ethanol from the mix. You only need a container and clean water. The trickiest bit would be to modify the container for easy separation / drainage of ethanol mix.

Put petrol into a container, add about 10% of clean water, shake, leave the mixture for a few hours. The ethanol (with water) will separate and will settle at the bottom of the container and once the purified petrol above is clear and not cloudy, collect it from the top or drain the water from the bottom of the container.

So will that additive do the job or what?

What is the fuel octane rating before ethanol is added?

Well, I am not sure about that. I think we had 95 octane fuel before ethanol additive was the new norm. I don't think the octane rating would be lowered before ethanol added, so the mixture is 95 octane.