I noticed after leaving the car 3 days parked that reverse was weak this morning- cold snap here, but am worried. Is this a 722.6? Anyone had this? It may be a once in a lifetime but I don't know yet...

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1994 E420 43k (pickup, solid)
1990 300D 2.5 127k (sold) (now driven by friend)
1991 300D 2.5 73k (sold) (incredible car)