I have a 1987 merc 3cylinder autolube 60hp and it only goes into over heat alarm when the water her in virginia gets over 85 degress.all spring i ran top
speed(5,000rpm) in cooler water and no alrms at all.it runs great,starts up great each time.i do not use the old AUTOLUBE i just put 3oz of...
i have a 1987 mercury 60hp 3cyl auto lube that the heat alarm goes off in
warm summer water(over 75degrees).i can run the heck out of it in 60-70
degree water in spring at 5200to 5600 rpm and no alarm??? this has been
on going for 4 yrs.the water pump has been changed out 3 times by 3 different...