I`ll further muddy the waters,Remove your moldings, get a heat gun , Set it on low, soften the tar and scrape off tar.Any residue left can be removed with lacquer thinner or acetone I use a green 3m scrubbie and lots of paper towels. I used an old 1/4 hp motor and attached a mandrel on it so I could run a buffing wheel. Get a bar of stainless compound and buff til your happy.