its a 99 merc force 120 hp, 4cylinder 2 stroke. I did force water through with a hose when i had the L/U off. Came through fine, nice and strong. Not sure if theres a thermostat yet, its still a new OB to me. I'll check that next.
Chrysler used to manufacture force, Mercury bought them out and made them for a few years, 1999 was the last year that they were manufactured but they were built much better than they had started by then.
![]()