In Reply to: Ford Jubilee Rebuild posted by JR in AR on September 16, 2020 at 08:42:23:
No one with better experience chimed in. Lacking better knowledge,
Stat goes in the upper hose, bulb towards engine. I also drill a 1/16 hole in it somewhere to allow any trapped air to get through. That hole also allows better heat transfer and minimizes temp surges within the engine getting the stat to open.
Paint on any surface against a rubber seal will both wear off and wear out a rubber seal. Might not be a good idea.