I havent ever been under my morris (shame on me) but have just bought some ramps (ebay bargain) and going to take a look. i keep hearing about waxoil but havent a clue on level prep required, is it just a wire brush off or the whole rust inhibitor route...
can a knowledgeable member please give me a simple step by step "how to" guide i can follow through on.

thank you for all the fab replies but can someone do a prep 123 for me...nice & simple
something along the lines of...1. jet wash underneath (carefully) 2. treat any areas of rust with.....
(yes i am new to venturing under betsys undercarriage for a sneaky look-having only just puchased some very rusty ramps)