Looks like paint stripper the way its cracked up and broke away, the laquer and base coat and primer all in one go
if you rub it gently does it break away????
also brake fluid wouldnt of caused this
Hi, rubbing it will cause more to flake off, although quite a bit of pressure is needed. Picking at it however will take it straight off!
In my opinion the damage diesn't appear to be the result of a liquid chemcal damage from the exterior as the marks would most likely show pooling marks of a liquid. I have seen this once before many years ago on a Ford and was attributed to acid etching through from the metal below. Prior to painting the car body is dipped in an etching bath to remove contaminants and then washed clean of any acids and alkilis. Any remaining acid or alkili can force its way through the primer as it is porous and in turn force the paint to break away. If you knew which company supplies the paint for Renault during manufacture you may be able to contact their technical department for advice.
Thats great, thanks for that response, i'm taking it to a specialist tomorrow who will hopefully come back with something useful.
As for the paint manufacture I might try and dig that info out and contact them.