Fake fuel hose warning

E10 fuel from September 2021
From 1st September 2021 all forecourts in the UK will be required to sell new E10 unleaded petrol as standard containing up to 10% bioethanol in each litre from the pump. Currently unleaed across the UK contains 5% ethanol and is labelled E5. The new E10 fuel will be labelled E10 on the petrol pump.

E10 grade of motor fuel has had enthusiasts with older cars worried about its effects particularly on their classic cars. The two big issues with ethanol fuels and classic cars are:

Ethanol can have potentially damaging effects on the metal, plastic and rubber parts in the fuel system - typically fuel hoses which need to be replaced by ethanol resistant rubber hose. The effects can also include sticking carburettor floats but not all classics will have problems.

Ethanol in E10 fuel is hygroscopic so it tends to absorb water and with classics that are left idle for periods of time that moisture in the fuel can cause problems like corrosion within fuel tanks and then rust particles blocking fuel filters.

In addition to prudent maintenance and upgrades to the fuel system (like readily available replacement enthanol resistant fuel hose), another option for a classic car owner is to use E5 fuel with a much lower ethanol content.
See our NEWS item on 18th July 2021

Posted: 210804
Fake fuel hose warning
This is the headline in a lead article on page 5 of the popular weekly Classic Car Buyer out today which advises classic car owners to upgrade fuel systems to counter the damaging effects of E10 fuel (due at UK pumps on 1st September 2021) - but CCB adds there are pitfalls to watch for. The CCB article says "E10 petrol is arriving fast, leaving owners of some older classic vehicles with a choice; use the more expensive "protection grade" super unleaded that's to remain as E5, or modify their cars to suit" fuels with a higher ethanol content. CCB then adds "sadly some of the parts available to do that could be substandard, potentially causing more problems than they solve - particularly when it comes to fuel hose purporting to be ethanol-safe". Link to the article to follow

Classic Car Buyer is published weekly and has a cover price of £2.90. Subscribe now and save money on the retail price and get each issue delivered direct to your door. Visit the CCB website. More

MGBGTV8 and ethanol fuel
See a set of slides from a presentation
made by Tony Lake at a V8 Technical Day in 2013. Slides

Ethanol fuel and the RV8
What is ethanol, where does it come from, why do we have to use it, are the myths true, what might be affected on a classic car like an RV8, what can or must we do, and where can we get replacement parts like fuel hose and clips? These were the key questions Nic Houslip covered in his talk at the V8 Technical Day held on 18th May 2013 for MGV8 enthusiasts. More

What are the concerns with biofuel for MG enthusiasts?

In 2011 a report on the compatibility of vehicle fuel systems with bioethanol from the consultancy QuinetiQ for the Department of Transport recognised the problems for older cars running on blends of ethanol and petrol. The report recommended a delay in the introduction of higher levels of ethanol in the UK. The questions on many MG enthusiasts’ minds then were what are those problems, what damage has been seen with SU fuel system components and what
alternative materials have been used for replacement parts? So in 2011 we visited Burlen in Wiltshire, the only maker of genuine SU carburettors, fuel pumps and spares, to see what damage they have seen to SU fuel system components from ethanol and what alternative materials they have used to produce replacement parts. Article