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Marvin Gardens

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1991 201 Sunsetter

350 Jasper

There was no thermostat in when I bought boat.

What temp thermostat is best?

160, 185, or 195

Boat is used soley on Norris Lake in TN

Water temp range 55-85


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Back then they came with 140 ... I replaced mine with a 160. I was told by Mercury that the reason for the 140 was that the salt would migrate out of water and adhere to the engine above that temperature and they never knew what environment the engine would end up in.


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