If I could do it all again..id go HOH not HIH...coolant lines tend to break, and with HIH the PIA factor goes wayyy up! This for all but the coldest climates...

Stay away from anything plastic (esp valves and tees). Plastic breaks.

Seriously consider skid plate along bottom of vehicle to protect lines. Not much room under a benz, not much ground clearance either. Sagging suspension with 160 lbs of WVO in trunk wont help...

__________________
Paul
Benz-less
I need an SDL !