What is the maximum temperature a 1988 Mercury 175 outboard should get to without it being a concern?<br /><br />Or what is the max temperature it should not go over?<br /><br /><br />I just installed a new temperature gauge, one with numbers, on my boat. The old temperature gauge just had a meter with C and H, cold and hot, but you could never tell what the temperature was. The engine seemed to heat up a bit at headway speed.<br /><br />This Mercury seems to change temperature a lot depending on RPM, but I believe that is the way they are designed, popper valve, or something like that.<br /><br /><br />Thanks.
