If they've been soaking up fluid for a long time, yes, they'll be hard to dry out. Presumably though, he caught the problem early enough that they're not completely ruined.

Clean them with brake cleaner and dry them in the sun or with an air hose.

1950 Chevrolet 3100 (Ol' Roy)

1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)