103.00 engine has sprung significant coolant leak (4-6oz/day). I am at a loss to determine the source. It appears toward the rear of the block but not sure if it's a head gasket or not. Please share your experience with this kind of leak in the 103.00 engine. Any recommendations as to the normal chain of problem solving for this head-ache? Thanks, in advance, for taking time to reply.
Dick Mc D

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1994 E420, 1994 E320CE, 1994 E320TE and 1991 300SE