New E10 fuel changes may lead to the ‘deterioration’ of classic cars ‘over time’

E10 biofuel: Department for Transport explains why it’s ‘better'

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Nigel Elliott, spokesperson for the FBHVC warned drivers could see issues develop on their vehicle “over time” as a result of repeated exposure. He warned incompatible classic car hoses may start to “swell” if the wrong petrol is continually used.

However, he warned drivers should not see any “longer-term effects” if they only use E10 fuel now and again.

Mr Elliott warned ethanol generally “takes time” to start damaging the structure of key parts.

Speaking on the MG Car Club podcast, Mr Elliott was addressing general concerns about E10 fuel in classic cars.

He said: “Certainly, the odd fill of E10 is not going to cause any harm.

“It’s a longer-term effect, in terms of elastomers, flexible hoses, ethanol is a small molecule.

“It takes time to leech into the hose and damage its structure.

“One tank full isn’t going to cause a problem.

“If you’ve got an incompatible hose and you repeatedly use ut then yes, over time you will start to see some deterioration, perhaps some sweating of the hose.

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“Typically, you will see it start to swell.”

In the interview, Mr Elliott also warned the new petrol could separate, creating a “corrosive mixture” in vehicles.

Although, he warned this was unlikely if drivers had a “well-maintained system”.

The RAC has previously warned putting E10 in an incompatible vehicle could result in damage due to bioethanol’s “corrosive properties”.

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