E10 fuel in our rotarys...

[gt_james]

reply from Exol UK:

"Hello James,

Our Racing Two-Stroke is compatible with E10 fuels. I’m sorry, I don’t have any data on E85 at the moment, but I suspect that may require a separate formulation given that it’s nearly all ethanol.

I would not advise storing a fuel pre-mixture for more than 30 days if it contains ethanol. There is a distinct possibility of the ethanol separating out from the petrol once it has had chance to absorb water from air. This would lead to an inconsistent fuel/oil mix.

I would give the same advice on any two-stroke product unless it is specifically fully formulated to stabilize fuel and lubricate. I would not mix separate fuel stabilizers and two-stroke oils over an extended period either, as it’s impossible to predict the outcome.

Kind regards,

Rob Lundie

Technical Services Manager"

Looks like I'll keep using the nice cheap Exol then with E10, but unfortunately I do leave fuel in the tank for a few months often, which is bad with modern fuels with ethanol. I think for my car with OMP deleted I may think about draining the tank and remixing before starting!

[gt_james]

For those who leave premix in the tank for a while this old post is helpful about motul premix oils, but it's a lot more expensive. But it's used by some very impressive race cars so I guess you get what you pay for

[MelloYello]

nformative stuff guys, thanks for sharing.

[Hobbawobba]

You received a fairly decent reply there aye, James, I completely forgot about that GBR post! I think I have the screenshot on my phone also hahaha

[spirit r]

Fuellines , fuelpump need to be E10 compatible. Omp linkage shimmed a little. Getting more oil for the apex seals.

I think this pretty much sums it up! Hahaha . A lot of older cars will probably break down (with fuel leaks). Quite dangerous really?

You'r so right! Yesterday a old beetle was burning near my home!

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[Hobbawobba]

That is sad to see!

[spirit r]

I forgott to tell what i found out! All the modern E10 compatible cars got a plastic fuel cape and fuel inlet. So look out for yours! Very aggressive these fuel.
Stainless steel screws and chrome will help a lot.

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[Casey]

Latest position from the GOV.UK website on the introduction of E10 fuel:

https://www.gov.uk/government/consultat ... -responses

Government decision on E10 petrol

In line with the feedback received to this consultation, we can confirm that we’ll introduce legislation as soon as possible to require fuel suppliers and retailers to introduce E10 petrol in the standard 95-octane petrol grade by 1 September 2021. We’ll also require the higher-octane ‘Super’ grade to remain E5 to provide protection for owners of older vehicles.

Subject to parliamentary approval, the introduction of E10 at forecourts will occur during summer 2021 supported by a comprehensive communications campaign.

The initial legislation will apply to Great Britain only. In line with our obligations under the Northern Ireland Protocol, we’ll also notify the European Commission of our intention to legislate for the introduction of E10 in Northern Ireland to ensure regulations are in place before the September 2021 change in petrol grade.

Looks like I'll be moving to premium fuel to stay away from the possible risks with using E10!

[Threesevens]

That doesn't look like too bad an outcome. Moving to the premium fuel is not going to cost too much based on the low mileage most of us do.

[gt_james]

I was looking again recently about different fuels and ethanol contents, its all quite confusing.

there's no such standard as E0. The lowest label standard is E5, which contains up to 5%, so a fuel with E5 on the pump could contain no ethanol. E10 also means up to 10% ethanol, so I believe you could in theory fill up with a pump labelled E10, which has no ethanol, then next time fill up with a pump labelled E5, which has 5% in. Very confusing for people, but makes it easy to write the standards!

I think a lot of people have picked up on this confusing labelling system so luckily some of the fuel suppliers tell you a bit more about the ethanol content on their websites.

From what I have found, only Esso says they produce ethanol free fuel in the UK, everyone else that I have found so far says all their fuel is up to 5% ethanol. Hopefully Esso keeps offering the ethanol free fuel, and others stay at up to 5% rather than all moving to up to 10%. Esso's supreme 97 and 99 (I didn't realise they made a 99octane fuel) is ethanol free, so I will be making the switch to esso is my old cars, especially if the fuel will be in the tank a while.

Here's what esso say on their website:

What is the ethanol content of your fuels?
The majority of unleaded 95 Octane petrol sold in the UK contains up to 5% ethanol as required under the Government’s Renewable Transport Fuels Obligation (RTFO).

There is currently no requirement for renewable fuel (such as ethanol) to be present in super unleaded (97 and 99 grade petrol).

Esso super unleaded petrol (Synergy Supreme+ Unleaded 97 and Synergy Supreme+ 99 ) is ethanol free (except in Devon, Cornwall, the Teesside area, Scotland and NW England). We would therefore advise anyone who has concerns about the presence of ethanol in petrol to use Synergy Supreme+ – providing they do not fill up in Devon or Cornwall, the Teesside area, Scotland or NW England. The European standard BS EN228 covers the requirements for 0-5% ethanol unleaded petrol, the labelling requirement for zero % ethanol is E5 (as is up to 5%), a E0 label doesn’t exist. We understand that this is confusing if you are looking for zero % ethanol fuel, but as advised we can confirm that our Supreme Unleaded fuel supplied in areas except those listed (Devon, Cornwall, Teeside, Scotland and NW England) is ethanol free. from https://www.esso.co.uk/en-gb/fuels-faqs