Avoid underseal unless the metal is 100% spot on- any rust can just fester:~
Far better products are now available as being mentioned- Bilt Hamber also do a descent range- Dinatrol is good- Wax treatments diluted with clean engine oil for spraying is another.
Good luck
Bob.
Last edited by Bob Meadows; Jan 23rd, 2021 at 13:10.
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