[wensum]

A friend had their vintage car catch fire recently and luckily had a fire extinguisher on board.
This proved inadequate but fortunately a couple of other people rushed up with their extinguisher and the car was saved.
Unfortunately, each was a different type and hosing down caused a reaction that corroded aluminium components. It appears that each type of extinguisher requires a different method of removing the residue. An extensive article was written about it and could be posted if required?
Keith