WHat engine is it?Most likely is its an old air filter, and your engine breather pipes are a bit clogged, which does happen over time.Put in a new filter and clean out your breather pipes.
As above. Is it a standard paper filter, or an aftermarket "performance foam filter" type thing? Reason being as they are supposed to be oiled. It isnt black heavy oil though obviously, just light greasy stuff.
hi, sorry to butt in, but are the breathers the same thing that my neighbour was telling me that used to get clogged and cause water to get into the footwell? ( on his mk 1 i might add) can anyone upload a pic of the breathers please, pretty please x