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Old 3rd September 2021, 16:01   #31
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If you want ethanol-free petrol, look on the Esso website. Their Synergy 99+ is ethanol-free as noted in this month's Practical Classics.
Don't forget that there has been ethanol in petrol for several years, so your car has already been exposed to it. I've had to replace the fuel lines on my lawnmower and strimmer which it has rotted. Fortunately, my 75 has had no such problems and is compatible with E10 according to the govt. compatibility checker. A good idea to fill up with Esso 99+ if the car is parked up over the winter, IMHO.
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Old 3rd September 2021, 17:16   #32
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Quote:
Originally Posted by torque2me View Post
On that particular engine it might be but the consensus of opinion is they run a little hotter - mine certainly does.
Kev

There'll be no significant difference between E5 and E10 in general and regarding the coolant temperature in particular.
You need to fill in with much more ethanol percentage to detect a difference and the more you fill in with ethanol the cooler will be the coolant.
I'm sorry to say it's not a matter of engine or opinion, but a technical, physical & chemical, effect.

Moreover regarding now the air inlet, ethanol in significant proportion (the more you fill in...) tolerates and even likes warm air (which is absolutely the contrary with petrol as everybody knows) which helps the mix air-ethanol to be better sprayed in micro particles in the injectors.
It's fantastic what I've learnt along the last 5 or 6 years about all those ethanol properties.

At last ethanol is an excellent cleaner of your system and not at all corrosive (I can explain if needed), that's why you are well advised to swap - if necessary - the petrol filter because sometimes some muck might have been gathered in the system along the years. But don't be afraid: I've swapped the petrol filter in both my 4 cyl. Rovers but in my 22 year old KV6 because I don't feel the need at the moment. Another reason: it's far easier (and cheaper) in the 4 cyl. than in the KV6 to swap the filter!

And when last year my good mechanic took off the head in my 25 to swap every gasket & the like, after 3 years of E85 use he noticed that all parts were clean and neat without the slightest alteration and that the spark plugs were nicely light brown coloured and in very good condition: he took pictures at my request to be kept as an evidence.

Hence ethanol in so little quantity (E10) cannot be detrimental but rather slightly positive for your engine chaps...
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Last edited by Dorchester2; 3rd September 2021 at 17:20..
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Old 4th September 2021, 07:19   #33
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Quote:
Originally Posted by bl52krz View Post
Just had a look at the flashpoint of these two liquids.Flash point of petrol= -45F. Flashpoint of Ethanol = over 60 degrees.Wonder what effect this will have on the starting ability of our motors will be in a really cold winter? My guess is that it will take longer, and if your battery is not in tip top condition, perhaps not atall. On the other hand, will this mean that our engines will run cooler? Can not wait to find out.Filled mine up today with half a tank of the E10 because my tank was half full with E5. Does that make it E7.5?

You're quite right BUT ONLY with full E85: in bad season the starting ability is rather bad but only at the first time. That's why I've implemented a push button starter with a 10k ohms resistor (to get a mocked very low temperature sent to the ECU which then is to deliver more fuel). Then I haven't any problem and the engine is firing up at once.
Anyway the difficulty does progressively come only above 50% of ethanol.
Once more I can repeat that E5 or E10, that will not make any difference and you'll not be able to notice any wrong on a chilly morning in winter...
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Old 5th September 2021, 05:34   #34
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My own views on E10..

My wife has been using this in her car and we have quickly noticed.. it isn't quite as willing to set off quickly as it once was (mainly busy roundabouts etc).
It also doesn't want to idle as smoothly and we have noticed that it already appears to be going through the fuel just a little bit quicker. (Will be more exact when go to fill again in a few days time) so my wife has said she won't be using it again as she's getting annoyed when trying to set off quickly and it appears to "bog down" almost stalling and finding she is having to rev it more before setting off quickly. (Which I've also experienced too) we have owned her car for the last 3 years and not had noticed this before..

Personally, I aren't in favour of using it.. I like my 75, it's a automatic V6 and my daily commute to work etc I'm filling up every 10-12 days. I don't want to be filling up more frequently, certainly not at £77 each time! More so when the higher ethanol content is believed/known to accelerate degradation of incompatible seals/gaskets. The seals/gaskets in my 75 might well be okay with ethanol.. but the cars nearly 20 years old.
Thankfully, I do have a Tesco garage not too far away (we have been using this for the past 5+ years anyway) so will be using momentum 99 again and see how things go. If it gets too expensive (7p per litre difference) then I may be forced at that point to just go to diesel anyway). If the next owner wants to run my 75 on E10.. fair enough.
For me and how our finances work, I just can't stomach putting in £77 of fuel and having to fill up more often and having that slight doubt that... It could be doing harm to the car in some way.
People may think I'm nuts but.. I don't agree with paying for a fuel that has been watered down, that can cause a small drop in mpg, that could also cause running issues and cause damage to seals and gaskets.. for the sake of an extra 4-5 quid per tank.. I'd sooner just use momentum99 with upto 5% ethanol.

Thats my views on it... I can't use it in any of the classics we own and won't either.

I did read something that the fbvhc recently put out about E10,
One thing that did catch my eye was the fact that elastomer gaskets and seals are affected by ethanol. (Ask a daft question but.. wasn't the k series head gaskets made of elastomer originally? If so.. were there any other part of the fuel or engine system that used elastomer for a seal or gasket?)

I do find it curious how, having downloaded various owners handbooks including export versions... Not one states anything about ethanol. (Why would a company go to such lengths then not make people easily aware that it can basically run any type of petrol (virtually).

To put it another way... If it was gas/electric and your supplier stated that the price was going to stay the same (which is already quite high) but your going to have your gas/electric turned off during the hours of midnight to 6am ( the effect of watering down the fuel with the ethanol). You or at least I would, then be expecting a reduction in my bills, failing that being possible, looking for different supplier even if it meant a small increase in cost.


If the price of E10 petrol fell to around £1 per litre I'd be tempted.. maybe but..

Maybe of interest to some

https://www.fbhvc.co.uk/fuels
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Last edited by biffa75; 5th September 2021 at 06:18..
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Old 5th September 2021, 10:25   #35
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Does anyone know what I should use in my 78 mgb? These ghastly tree huggers bent on ruining our lives.
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Old 5th September 2021, 16:22   #36
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Quote:
Originally Posted by Raven Black View Post
Does anyone know what I should use in my 78 mgb? These ghastly tree huggers bent on ruining our lives.
In an MGB, I personally would use Esso Synergy Supreme+ Unleaded, which is ethanol free in your area.
I recently contacted Esso, regarding their intentions when E10 is introduced, and this was their response:-

"Dear Robert,

Thank you for your getting back to us. I would like to confirm that our plans are unchanged concerning the ethanol content of the Synergy Supreme+ Unleaded. We have no intention to add ethanol to Synergy Supreme+ in general, however in some areas, the service stations are supplied from terminals that are operated by third parties, and they may choose to blend ethanol in UL97 or UL99 grades in order to meet their own biofuel obligations. Currently, these areas are Devon, Cornwall, the Teesside area, Scotland and the North West of England.

In other areas, where terminals are wholly owned and operated by Esso, Supreme+ Unleaded grades remain ethanol free.

Yours sincerely,


End Consumer and Customer Care Specialist
Customer Service, Fuels & Lubricants, EAME Budapest BSC
Office: +442071361798
Fax: +442070264728
[email protected]"



Rather confusing, but Synergy Supreme+ Unleaded, although ethanol free, will be marked E5 at the pump.
This is thanks to the European standard, where there is no E0 label, so E5 means anything from zero to 5%.

It is interesting to note that other fuel suppliers are reluctant to state if their fuels contain ethanol or not.
So I assume that they do.
Esso appear to be one of the few major fuel suppliers who are coming clean.
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Old 21st October 2021, 15:52   #37
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Lots of Brouhaha around the internet since E10 petrol was brought in at the beginning of September with drivers complaining of getting three times worse mpg on it. https://uk.newschant.com/auto/e10-pe...e-times-worse/
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Old 21st October 2021, 15:59   #38
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I've noticed in the little Fiat 500 it runs rougher and is sluggish pulling off on E10, it's also not doing the same MPG and so it's getting the Tesco 99 as It runs like a dream on that and picks up the revs much smoother.
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Old 21st October 2021, 16:05   #39
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Quote:
Originally Posted by Saga Lout View Post
I've noticed in the little Fiat 500 it runs rougher and is sluggish pulling off on E10, it's also not doing the same MPG and so it's getting the Tesco 99 as It runs like a dream on that and picks up the revs much smoother.

I read on one report that said the smaller the engine the more pronounced the drop in mpg was in using E10.
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Old 21st October 2021, 17:43   #40
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I’ve only had my car since the switch to E10 and it’s only had that put in it. It’s run fine, lovely and smooth. No idea if it’s affecting economy but I’m averaging about 25 - 30mpg according to the trip computer.
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