Has anyone started at -20f without plugging in?
FTE Chapter Leader
Joined: Sep 2011
Posts: 63,234
Likes: 6,666
From: Great Falls, Montana
Howdy Folks.......
Just a quick note: Wind chill does Not mean anything to a Truck.
Wind Chill is the effect of wind on Flesh.... Your skin feels the difference.
So, -10 with zero wind feels like -10 on your skin. -10 on the truck
-10 with wind feels colder than -10 on your skin. still feels -10 to the Truck.
Just a quick note: Wind chill does Not mean anything to a Truck.
Wind Chill is the effect of wind on Flesh.... Your skin feels the difference.
So, -10 with zero wind feels like -10 on your skin. -10 on the truck
-10 with wind feels colder than -10 on your skin. still feels -10 to the Truck.
Senior User
Joined: Jan 2008
Posts: 101
Likes: 0
Howdy Folks.......
Just a quick note: Wind chill does Not mean anything to a Truck.
Wind Chill is the effect of wind on Flesh.... Your skin feels the difference.
So, -10 with zero wind feels like -10 on your skin. -10 on the truck
-10 with wind feels colder than -10 on your skin. still feels -10 to the Truck.
Just a quick note: Wind chill does Not mean anything to a Truck.
Wind Chill is the effect of wind on Flesh.... Your skin feels the difference.
So, -10 with zero wind feels like -10 on your skin. -10 on the truck
-10 with wind feels colder than -10 on your skin. still feels -10 to the Truck.
FTE Chapter Leader
Joined: Sep 2011
Posts: 63,234
Likes: 6,666
From: Great Falls, Montana
Wind blowing on the dry sheet metal of the truck does not make the metal any colder than the real temp. If the sheet metal is wet...+ wind = colder temp. But the engine would not be colder than the real temp.
"windward...Leeward" Sounds like a sailor...
EDIT: Just read the next post........McFarlandkm said it.......:-)
Elder User
Joined: Jan 2008
Posts: 529
Likes: 0
Heat is energy. Wind Chill is a calculated value of the rate of heatlost by a surface through convection depends on the wind speed above a surface. Simply more wind, more heat loss. In cold weather (less humid) we hear Wind Chill and in warm weather we hear Heat index or humidex.
Water is a better conductor of heat then air so on the wind ward side of the truck, it froze quicker because the wind removed more heat before the water evaporated away and the other side was just loosing heat at a slower rate.
This is why in warm weather and you sit in front of a fan it feels like cooler air but it is ambient temperature, it is just removing heat from the body quicker.
The reason why they have a rad fan, to remove heat faster.
A freezer doesn’t produce cold, it removes heat.
The faster you drive your truck, the exterior temperature display doesn’t read colder.
So back to the OP’s Post.
With a block heater, it produces only so much heat, if you have the truck parked over night facing into a wind, the block heater is less efficient. Where I live people said that there vehicle wouldn’t start this morning plugged in and it was colder the night before, the night before there wasn’t a Wind Chill. If the OP starts his truck at lunch time, the engine block is designed to dissipate heat, when he starts the truck to go home I assume the engine will be back down to ambient temperature and the more wind there is the quicker it loses heat.
The use of a block heater saves you money and makes it easier on the engine.
Water is a better conductor of heat then air so on the wind ward side of the truck, it froze quicker because the wind removed more heat before the water evaporated away and the other side was just loosing heat at a slower rate.
This is why in warm weather and you sit in front of a fan it feels like cooler air but it is ambient temperature, it is just removing heat from the body quicker.
The reason why they have a rad fan, to remove heat faster.
A freezer doesn’t produce cold, it removes heat.
The faster you drive your truck, the exterior temperature display doesn’t read colder.
So back to the OP’s Post.
With a block heater, it produces only so much heat, if you have the truck parked over night facing into a wind, the block heater is less efficient. Where I live people said that there vehicle wouldn’t start this morning plugged in and it was colder the night before, the night before there wasn’t a Wind Chill. If the OP starts his truck at lunch time, the engine block is designed to dissipate heat, when he starts the truck to go home I assume the engine will be back down to ambient temperature and the more wind there is the quicker it loses heat.
The use of a block heater saves you money and makes it easier on the engine.
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