Thread: W123 300D Does the Coolant Thermostat Orientation Really Matter?
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Old 03-30-2021, 03:16 PM
runnersigh runnersigh is offline
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Quote:
Originally Posted by tangofox007 View Post
Except that it makes no sense in the case of the OM617 engine, which features a vent in the thermostat housing itself.
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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