Quote:
Originally Posted by runnersigh
Forgive another dumb question but where is the vent on the OM617 housing? Also would that vent on the housing make the vent in the thermostat redundant in that case?
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There is a passage in the housing just outside the perimeter of the thermostat flange. (That's why there is a small hole in the thermostat gasket.)
Not saying that they never existed, but I have never encountered a OM617 thermostat that featured a vent hole. If one was so equipped, it would be redundant.