When changing the thermostat is it a must to?

put sealant on the gasket? And about how much do you use? I just took off the thermostat housing and there was no thermostat in there. I guess that's why it always ran cold. So Im not positive how the thermostat goes in the housing. Should the spring part be facing down, away from the upper radiator hose? The car is a 1997 Dodge Intrepid 3.5 liter.
When changing the thermostat is it a must to?
The pointed part should be facing toward the outside of the thermostat housing. Sealant is a good idea...it helps keep the thermostat in place whil your put the neck back on
When changing the thermostat is it a must to?
there is a reason there was no thermostat in your car. it was running hot. you better back flush your cooling system. get new antifreezee

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