Has anyone come up with a thermostat bypass for bleeding the cooling system? I envision a valve between the hot side of the thermostat and the upper radiator hose. The valve would be normally closed, opened only to speed up bleeding after filling the cooling system. An alternative is a thermostat housing design that allows a screw to force open the thermostat. Design and implementation aside, is it sound logic?

Sixto
MB-less

I'd put it on one of the heater hoses at the back of the engine I think. Easier to create a high spot there.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

My Chevy LT1 V8 has a simple brass valve tapped into the thermostat outlet that lets air out at that spot. You just open it up and fill until liquid comes out.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250