Here is a video on how to replace the thermostat on a 1994 Buick Regal with the 3800 Series 1 V6, better known as the 3.8L Buick Engine.
Issues were not building enough heat in the car on cold days per the dash gauge, and thus the defrost vents weren’t working great with the lack of heat. While I could have tried other methods like flushing and such, the thermostat is such an easy mod, $10, and off the list if it doesn’t fix stuff. It did though, so we’re done. Yay!
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Excelente desde la CDMX. Gracias. Buena referencia de como cambiar el termostato mi auto es Buick Regal 1996, 3.8 desde México.
There is supposed to be an o ring that goes around the thermostat that is tapered and the wider end goes towards the top, Felpro part # 35666