>> A << Thermostat Installation
WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Avoid adhesion of grease to the rubber ring of the thermostat. If the rubber ring is damaged, replace the thermostat.
Install the thermostat with care to avoid peeling or damage to the rubber ring. When installing the thermostat, face the jiggle valve of the thermostat upward.