Originally Posted By: Eric Smith
Interesting sites IMO. Some of the tricks I might just use. I have some old pipe insulation I can put to good use.
I use pipe insulation to block off the cooling openings on the Prius, and vary the amount of blocking depending upon the season. Hot, I block only the upper openings. Very cold, I block all but the driver's side of the lower opening (where the inverter cooling radiator is located). Seems to be good for a couple of mpgs.
EDIT: And when my CAN-View was still working, I saw no undue elevation of the coolant temps. This tells me the engine still cools itself just fine (to regulated temp), and I was just losing less heat to "overcooling".