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2010 Mercruiser 3.0 (TKS) with power steering..... Bought used, went our first time, alarm sounded and temp spiked at about 195-200 F after about 2-3 hours of use (At around 3500 RPM). Let it cool off, went home.
Took it to marina, had impeller replaced, T-stat replaced.
Took out again next...
