That's a healthy leak. Does Cryo-Seal claim to seal such a leak? I don't recall.

Sorry about the dash. My day will come eventually, I'm sure.

From the Cryoseal FAQ:

Q. Will CryosealŽ seal all leaks?
A. Our Self-Sealing Refrigerant process cannot seal extremely large leaks or ruptures. A good guideline to follow is that it should not be used for leaks that individually release more than 1 pound of refrigerant per hour. It should be noted that CryosealŽ will not seal dynamic shaft seal leaks on external drive shafts.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 159k miles
06 E320 CDI "Rutherford", Black on Tan, 178k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 75k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

doing a review on past evap failures it looks like they corrode from the outside in.

Added links citing problems:
http://www.peachparts.com/shopforum/archive/index.php/t-181586.html
http://www.club124.net/w124-buyers-guide.html

some cite the copper/aluminum interface other cite corrosion from mold/bugs etc.

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92 300D 2.5L OM602 OBK #59

I wonder why that would be?
what is on the coils that causes the corrosion? aluminum is a pretty stout metal, it tends to hold up in places that would make steel cry. flowing water will uncover the surface plating effect in the aluminum, is there exposed tubing on a flow location? are there chinese drywall fumes in there?

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I plan on dissassembling my 93 parts car... I will remove the dash at some point. I wanna look at the coil mounting and see what would cause corrosion!

the german's said it was some sort of mold/bug/magical being that exists in North America and not in Germany.

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77' 300D, "Cartman" SOLD @ 150K (didn't know what I had)
83' 300SD, "The Superdon" 325k+ @ 28mpg
95 E320 wagon, "Millennium Falcon" 231k+ @ 24 Mpg
95 E300D, "Sherley" 308k @ 33.69 Mpg, currently anticipating a head
99 Suzuki Intruder "Trudy" @ 45 mpg