I have bought a 2005 MX5 for some weekend fun and would like to rustproof the vehicle myself. What are the best DIY underseal protection brands on the market? I've been browsing online earlier and found some Dinitrol kit bundles are they good? They appear to also contain a cavity wax and rust...
This afternoon we had a Mk4 on the lift to look at the possible need for topping up the factory underseal.
First thoughts are there are a good few areas that need a further application of Goo.
Behind rear bumper
and again behind the rear bumper
The rear bulkhead