Quote:
Originally Posted by andyn666
One thing I did notice was the heater started cycling on and off while i drove it so it would seem while i hypermile my car it doesn't put enough heat into the system to keep the coolant above 85c!
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Have you already got a grille block on the car ?
Having less cold air going into the engine compartment makes it warmer here.
Trapping in the engine heat using an underbody shield would also help.
Insulating the bonnet is also an option.
Some do that with an engine blanket.
Others use cardboard ...