I think mine goes a tad after the first tick mark. So maybe 170*?

 

180-185 with 160 stat and no fan reprogram.

 

mine runs at about 180 to 190 and i just replaced the stock thermostat with a new 180* tstat from autozone...

but i just found out today that i blew my head gaskets.

so that doesnt matter too much now XD

but for yours buddy that sounds about normal

 

Stock t-stat (for now) - never seen the halfway mark.