The paint Maaco and similar places use is junk. Follow the diesel giant prep work how-to and spend the money you save on having a place that uses good paint spray the car. Last summer I got a quote of $1000 for just paint and spray work from a place that does quite a bit of work on Mercedes.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine