Check out the old thermostat:
The mechanic who last worked on Trog’s cooling took a screwdriver and tweaked the thermostat valve permanently open. Probably too lazy to order a new part and figured this would fix the problem. Tsk tsk tsk.
This explains the << 90C coolant temps on the way home.
Wow, you’ve made great progress on TROG. You are probably getting a lot of questions from people when you take it on the road. Even at gas stations, I kept getting people walking up asking about the truck and wanting to take pictures.
You were the right person to buy TROG, since you were able to fix it the right way.
Regards,
Paul
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