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My Yaris saves my wallet, not the planet. If the green fraudsters Strong, Gore, Hansen, et al. were all found hanging from lamp posts somewhere it wouldn't bother me a whole lot.
That said, the passive components of the Yaris cooling system are adequate for desert operation. They are also massive overkill for cold climate operation. If I don't block the upper and lower grilles I can't get the coolant up to thermostat temperature (~184F) in a 23 mile commute. The heater isn't very pleasing under those conditions either. Much worse from an efficiency standpoint is that the transaxle remains cold and rolling resistance stays very high. If you don't virtually stop all airflow through the engine compartment the transaxle will take hours to get up to its design temperature.
Grille blocks may not be helpful in a Tennessee winter, but they certainly are in a Minnesota winter. It lets me run a 200F coolant temperature which provides me comfort and about a 4 MPG boost. All ScanGauge verified of course.
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01-04-2010, 05:04 PM
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