So I ordered the molded heater hose from 'Phil' that goes between the back end of the engine into the heater core (driver's side). Removed the air filter and oil filter to get the best access. Lighly sanded/cleaned the barb to remove any deposits, pushed the hose all the way onto the barb/nipple (I thought), tightened the hose clamps securely, installed new oil and air filter filters then fired up the engine. It leaks now worse than ever!

Is it possible that the barb/nipple is loose and leaking in the head or is there some magic trick to installing a simple heater hose on a Mercedes!!!

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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