Ridiculous. I have a lower line that is ever so slightly seeping, not dripping, not really wet, just that oil stain. Was considering replacement until I read this.
I have two suggestions:
First-Remove lines at oil filter housing. Point one end into empty milk jug, blow compressed air into other end. Should get most of the oil out of the lines/cooler.

Second-Remove leaky lines by cutting them up with pipecutter, sawsall, etc. Take hose ends down to local Aeroquip/Russell/Earls dealer and pick up the correct metric-to-AN adaptors, AN fittings, and about 7-8 feet of braided stainless steel oil hose. -6 or -8 line/fittings should be more than adequate but take a section of hose to show the dealer to be sure. Install lines, route them any way thats practical and never worry about it again. If its good enough for aviation and NASCAR it'll be fine in a MB. Cost you $100-$150 and much easier to do. The added bonus is they will NEVER fail in normal automotive use. RT

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