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neil cairns
Newbie
:( We now have 2.5% of bio fuel added to our petrol. Bio fuels contain Ethanol, which according to a metallurgist has the following properties;-

" There are some reported problems with ethanol and aluminium alloys. These are mainly due to the fact that ethanol absorbs any water that is around and it is probably this that reacts with the aluminium in an oxygenating environment.

Ethanol is not transmitted in petrol pipelines for this reason, it reacts with the steel in the presence of water.

Ethanol is an OXIDISING AGENT in fuel. The corrosion rate increases with temperature."

Unquote.

So, any carburettor made of aluminium or zinc alloy, or fuel pump, or tank gauge unit is at risk. Any carburettor sited near a hot engine will suffer even more.

Any experts out there who can tell us how to stop our fuel systems corroding away? The VMCC has recommended draining down the float chambers of vintage motorbikes. What does the CVPG say?

NC.
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Bio fuels in petrol & classic vehicles · Technical Topics