wow. are you sure its a leaky evaporator? My mechanic told me it is very rare that
an evaporator leaks on a w126. I seriously thought it was my evaporator leaking inside my car, but it turned out to be my expansion valve.

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual