Thanks for the tip, that is very helpful. Would you by chance happen to know if they will sell or rent out a vane-type vacuum pump? I've got the venturi type and am thinking even with meager vacuum it might be effective with the extreme heat these last few days, especially if I leave the car idling while vacuuming. The extra heat will help boil out the moisture. I've also read of others tapping into the manifold vacuum while idling and using that to help vacuum moisture.

I've been eyeing the manifold gauges at Harbor Freight, so I'm covered there.

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08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280