On 04/03/2021 19:06, Rod Speed wrote:


"Fredxx" wrote in message
...
On 04/03/2021 00:32, Dave Plowman (News) wrote:
Been quite a few scare stories in the press about how E10 petrol -
coming
here later this year - will damage many older cars. Much of it the usual
press ********, after all E5 has been around for quite some time, and is
known to attack older 'rubber' flexible fuel pipes. Which don't last
forever anyway. Much of it generalization, but one specific was
mentioned.
It attacks the solder used on carburetter floats (those made of brass).
Any comments?


You're probably already using E5 petrol, E10 is just more of the same.

The biggest concern is that ethanol is hygroscopic, it absorbs water,
and you don't want a watery fuel stagnating in your fuel tank.
Especially if you only use your car once in a while.

You can get ethanol corrosion inhibitor to slow/stop these effects.

I'm surprised the equivalent of diesel bug isn't an issue?

No bugs like an ethanol water mix.

I was going to say that too, then I realised that I don't actually know
what oxidises it to acetic acid. I assume that is mediated by some
biological activity.


As long as the fuel is dry or has corrosion inhibitor then it
shouldn't attack either lead (in old solder) or zinc (in brass).