I also installed a 180 T-Stat from Joey this last winter, in prepration for this summer's excursions.....we are now about 3,000 miles into it, and there is NO WAY I would go back to a different thermostat..... I also did a 6.0 fan, (on the '97 7.3 Viscous Drive clutch), and between these two little mods, the truck now cools like it Should have from Ford.
in cold country, I would be running a Factory 'Stat.....we are out here on the West Coast where there is lots of sun and lots of REAL hills......like 12-15 MILES of 6-7 %
and all I do with this rig is tow my 5er.
oil temp now runs about 200 deg cruising along the flat.
oh yeah....and take all the crap out from in front of your radiator...... if you NEED a bug screen, use screen that was Designed for bug screen, it's designed to NOT restrict the airflow....
wanted more air thru my radiator....here's my "Bumper Mod" .....
"Let There Be AIR ". ......