My local trusted mechanic has about 40 year experience and he says he started out as a rust proofer.
He did a really nice job of rust proofing the undercarriage of my vehicles, and he only charged me $100 per car.
It might a be a good idea to not let the dealership do it, as they will have a huge 95% profit markup an maybe charge you $3,000
to do it. Also dealership techs make more money the faster they work, so a rustproofing at the dealership might be a low quality quick rush job.
He did a really nice job of rust proofing the undercarriage of my vehicles, and he only charged me $100 per car.
It might a be a good idea to not let the dealership do it, as they will have a huge 95% profit markup an maybe charge you $3,000
to do it. Also dealership techs make more money the faster they work, so a rustproofing at the dealership might be a low quality quick rush job.