More aftermath, it is eating the updated larger belt for the 207mm pulley. I think when the coolant leak got on the belt it caused it to slip
Last week was pulling a car trailer weighing in at 9300lbs, 100degF, 4400feet, 75mph, maxed at 6500rpm up a grade… received christmas tree dash board and slight loss of power attributed to cyl3 misfire
Replaced all the plugs and it was good to go again. I always remember what your spark plug interval should be twice as soon under stg2 and even 3x shorter intervals with more power