Kinda tough to believe a few degrees change in the coolant temp would make much difference in the heater performance. The rear heater wouldn't work worth crap if that was the case, for us guys with rear heat!
On the 'burb the coolant lines travel through uninsulated pipe from the engine compartment all the way to the back of the truck. I've never measured, but I've often wondered what the coolant temperature is when it reaches the rear heater on a 0F day with a 70MPH highway breeze blowing along those pipes...
@strikk, I would claim the 185F thermo you replaced wasn't working correctly (not closing, engine too cool so poor heat), but I can't prove it. Whatever you did made it better.
On the 'burb the coolant lines travel through uninsulated pipe from the engine compartment all the way to the back of the truck. I've never measured, but I've often wondered what the coolant temperature is when it reaches the rear heater on a 0F day with a 70MPH highway breeze blowing along those pipes...
@strikk, I would claim the 185F thermo you replaced wasn't working correctly (not closing, engine too cool so poor heat), but I can't prove it. Whatever you did made it better.
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