[Piwoslaw]

Update on the coolant heater.
It seems like the best increase in temperature that I'll get is 25°C above ambient after 1.5-2 hours. Not exactly a RED HOT engine at this time of the year, but enough to have heat in the cabin at least 1km sooner (after 1-2km instead of 3km). It'll also bring the coolant to above freezing even in mid-winter, unless we get -31°C again this year.

I've started paying attention to how fast the engine cools off now. The other day it was around 2-3°C outside when I parked and about 2 hours later the coolant temperature had fallen to 40°C from 80°C. Later that evening it was around 1°C (plus windy) and the coolant temperature after 2.5h was 24°C, from 82°C. So I think I'll look into blankets and other ways to keep the heat in. I already have an OEM blanky on the underside of the hood (bonnet), but I bet that it's for noise control as much as holding temperature. Maybe I'll add some foil to that?

Originally Posted by vtec-e

Or until you layer some of this over your engine:

Thanks, Ollie