Welcome to the forum.
have fun.
I would think its possible that your vehicle got internal chassis protection put in 10 years ago when it was built.
Depends which Utility purchased it,
but the vehicles are never normally cheap & they get the best done to them.
If it lived & worked in the North East & Moray Firth it quite possibly did.
You need to see how the chassis is looking.
If you are going to do the chassis inside now..
You need to get the inside dry & free off Salt/mud/moisture if its in there before trapping that in
with Waxoyl.
(normally during the warmer summer a damp chassis from the winter starts to dry inside & rattle a bit,
go wadding or have a few damp days & its all full of condensation in there again.)
Not really that easy now on an older chassis to get the rubbish out,
& if its already Waxoyl'd or treated inside not worth messing with possibly.
Pumping in Waxoyl yourself without drilling it etc is easy enough tho.
2 x 1 gallon can should do it.
Worth concentration on the extarnal corrosion to the bulk head & body & external chassis before this winter.
the chassis might not rust any quicker from inside than it has up to now..
Would love to see pictures of it if poss.
You have 2 clubs local to you for events within 40 miles.
Buchan Offroad Drivers Club & the Highland Club.
www.bordc.netwww.highland4wheeldriveclub.moonfruit.comgeorge