Welcome to life with a 300SDL! They require a lot of patience at times. Great cars, but they are maintenance intensive, especially if they've been "deferred". For some "light" bedtime reading, you can see the "Diseasel" thread linked in my signature line. It's gotten quite long-winded, but that thread will probably be going on for years as I slowly redo that car.

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Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]