Land Rover Defender undersealing - wax or oil?

Is it worth getting a Land Rover Defender that's undersealed? If it is, would you recommend having the underbody coated in wax or oil?

Asked on 1 November 2016 by mrTHATCHER

Answered by Honest John
If it's already old, then oil-based because the wax will trap any corrosion that has already begun.
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