E10 Petrol

Puddleduck

Active member
Joined
Mar 26, 2021
Messages
36
Location
UK
In September 2021 the UK government are introducing E10 petrol to replace E5 that cars currently run on.
The difference between E10 and E5 is that E10 has 10% more Ethanol added to it, this is in a bid to lower carbon emissions.
The long and short of this is that vehicles such as classic/cherished cars (jeeps) and any vehicle manufactured before 2016 is recommended not use E10 petrol.
It has been found that E10 when used over a short period of time rots seals/gaskets and damages aluminium parts.
The UK government apparently have promised that E5 petrol will still be available for older vehicles to run on, however the sting in the tail is that the basic 95 and 98 octane fuel will be phased out and the only 95 and 98 octane available will be the super grade, at a much higher price.

So as of September 2021 in the uk Flatfender and classic car owners beware of the fuel change and check the pump before filling up.

I don't know what the situation is in the USA, may be some one could add to this.
 

Mark W.

Active member
Joined
Feb 6, 2021
Messages
35
Location
Silverton Oregon
Interesting we use E10 in everything at 87 Octane If your fuel system has rubber hoses or a lot of crud in it the Alcohol will scrub it out so put on a good quality 10 micron fuel filter right before the carb.

I started selling Gasohol (what E-10 was called at the time) in 1980 and once in a while someone would have a little trouble with the first few tanks cleaning out the crud but once that was past it worked great. I was running it in a 1970 Opal wagon with the 1500cc engine and it went like a race car on it.

I have run a 65 Dodge Polara 67 Mustang a 66 F-250 a 68 Dodge Van my 48 Willys CJ-2A a 1982 Chevy Celebrity, a 77 Toyota SR5 3 door all on E10 over the years and never had any trouble.
 

Puddleduck

Active member
Joined
Mar 26, 2021
Messages
36
Location
UK
Interesting we use E10 in everything at 87 Octane If your fuel system has rubber hoses or a lot of crud in it the Alcohol will scrub it out so put on a good quality 10 micron fuel filter right before the carb.

I started selling Gasohol (what E-10 was called at the time) in 1980 and once in a while someone would have a little trouble with the first few tanks cleaning out the crud but once that was past it worked great. I was running it in a 1970 Opal wagon with the 1500cc engine and it went like a race car on it.

I have run a 65 Dodge Polara 67 Mustang a 66 F-250 a 68 Dodge Van my 48 Willys CJ-2A a 1982 Chevy Celebrity, a 77 Toyota SR5 3 door all on E10 over the years and never had any trouble.
When I was working with BP they trailed E10 for a period of time about 8 years ago, the tanker drivers were complaining that all of a sudden the delivery hoses were leaking.
It was because the ethanol additive was eating away at the rubber seals, the answer to this was the seals were changed to neoprene and this seemed to solve the problem.
 
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