fluid film is sorta like Rust Check its a waxy kinda sticky oil film that clings The problem with the Zebart tye it it seals in moisture and junk and when pcs break off the moisture gets uner it and RUST ! Think of the Fluid Film like a coat of oil thet repels water and stops rust. My buddy does his vans with used motor ol in a rust proof gun and they are all 94'* and are driven in Central New York road salt and they are like new. You can break any brake line nuts or any other fasteners loose with no problems.
Bonneville 1998 SLE 3.8 v6 series 2,car has 212,000 miles on it and runs GREAT!