Morning Folks,
I've used Penetrol a fair bit for general rust work on horse floats etc and it's good stuff. Never thought to use it as you have Ian as a 'Patina preserving product'. I've never thought to. Perhaps my only concern is the length of time it takes to dry. It stays tacky for days or even weeks. This is what it's intended to do so it has time to penetrate crevices etc. my concern would be that for presentation work the piece would need to be kept in a dust free environment while it dries? What was your experience with that?
Also, there are wax products on the market for car folks who want to preserve the 'barn find' look. Never used them but I have seen advertisements for them.
Cheers,
