My RR came from the factory with undercoating.
Now I am taking the stuff out, its a really fun project.
I have been using a heat gun scrapper and lacquer thinner with mixed results.
Thanks
Matt
Heat gun on lower setting over an apx. one foot area a couple mins to soften -
for me was best ( torch would ignite the tar )
when most was removed then
Mineral Spirits ( softens the coating ) in a spray bottle using an old rag to wipe down the metal.
then to prep - Acetone or 'Wax - Grease' remover as a cleaner.
one of my cars once removed undercoating had some smaller rust spots,
I then used Ospho solution from Ace Hardware.
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