Volvo put some really robust paint on their really robust cars, so today I am going to use NuFinish paste to shine up the single stage (enamel or lacquer?) paint on my 1984 Volvo 245.
If you want to start over you could try Meguiars Car Wash +. It’s a cleaner stripper but gets you a good surface to clay. Dump the clay bar and use a clay mitt which is easier, quicker and safer.
Once done get a couple of coats of wax on it if you don’t want to machine buff it. Maintaining patina is just as hard as maintaining a super modern finish.