The Porsche 924 Owners Club

Super Unleaded grades (98 RON or thereabouts) are supposed to be staying at E5.

I’d guess cast iron not pig iron? I think the only thing that gets made from pig iron is cast iron.

Wrought iron and mild steel are also made from pig iron.
Cast iron is just straight forward re-melting and casting of pig iron.

Wrought iron and mild steel are purified forms of pig iron (smelting, alloying, hammering, etc.)

Greetings
Eryk

Any old iron

This thread has become rather Ironic

Not sure it will be a very big issue, E5 has been around for ever, and people have been running kjet and other old cars on e85 for along time around here. If something eventually gives up it would probably be due for a change anyway :)

Depends if the government decides to tax it like current fuels, which is circa 80% fuel duty, taxes and VAT.

The only issue in our fuel system are a few rubber seals and hose. If that perishes it was probably due to be replaced anyway. Everything else is metal. No issues with metal fuel system parts.

There are a lot of mixed reports but generally looking at more recent reports from critical industries that store and/or transport ethanol based fuels ......

Ethanol with a low water content attacks aluminium and many of its alloys.

Ethanol readily absorbs water which increases risk of steel corrosion.

Ethanol readily absorbs oxygen which causes steel cracking.

Rubber is badly affected by ethanol especially in vapour form.

Nylon should be safe with ethanol BUT there is more risk of steel shrapnel entering pumps from steel components.

Petroleum gumming is generally reduced with ethanol fuels, whilst gumming can be a bad thing it also acts as a barrier protection layer in steel tanks and lines.

There are mixed reports for brass and copper, this may be due do whether the metals are continually submerged in ethanol or are also intermittently exposed to air. Much the same goes for solder.

Stainless steel is very resistant to ethanol despite some early scare stories.

Additional corrosion protection chemicals are added to ethanol fuels but this doesn't appear to be at all standardised nor is it stated what the corrosion targets.