Not sure if anyone has had this problem before but anyway, maybe someone will get something out of this.
When i got that lifting bracket off, sure enough there was the remains of what was probably an o-ring. It was hard and brittle and snapped when i was removing it so it's likely the original.
Ran the car with the heat on max for 10 minutes and no leaks yet (no heat either but it will probably take a while to get all the air out of the system). So that was hopefully the problem...fixed for $2.10!!!
Many thanks to John who pointed me in the right direction but beware, seems like MB doesn't show this o-ring in their parts department's computers.
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'87 BMW 325 convertible (162k + miles)
'87 300E, 144k + miles (sold)
'93 Chevy Blazer (full size), 207K + miles
'89 Sea Ray 390EC, 2 x 454's, 1550 hours...
'85 AMF Sunfish
Olde Towne Portsmouth, VA
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