I have every tube and every hose wrapped on my truck. In the heat tests that have been run over the last few days my truck runs a little hotter than most.
All machines run hotter at sea level, but here in Idaho I still get a little better heat than most guys at sea level and I think its because everything is wrapped. Plus its colder here.
Since the single largest effect on net heat on these PTO trucks is the INCOMING water temp, I never understood why the fresh tanks weren't insulated, even Bane does this, for good reason, and they invented glycol running through the fresh tank as a preheat.
what pray besides standard run of the mill R-13 would one want to wrap their Glycol tanks with...water heater blankets are o.k but there has got to be something better....polyisocyanurate foam would possibly be the best but is it practical.