Cold weather start, with glow plugs and block heater. Why does my tractor not start at minus 20 C?

   / Cold weather start, with glow plugs and block heater. Why does my tractor not start at minus 20 C? #141  
guys are block heaters really 600 dollar's? its a freaking heating element.


 
   / Cold weather start, with glow plugs and block heater. Why does my tractor not start at minus 20 C? #142  
Still a huge waste of electric energy to keep them plugged in all the time. Kinda cooks the coolant, too.
 
   / Cold weather start, with glow plugs and block heater. Why does my tractor not start at minus 20 C? #143  
Still a huge waste of electric energy to keep them plugged in all the time. Kinda cooks the coolant, too.

A lot of folks would find 20 minutes I suffice to. Keeping it warm should not harm the coolant.

With the 24 hour plug in never heard of boiling the coolant or damaging it. That’s over a 70 year or so time span.

Easy to check temperatures with an infrared type heat temperature gun.
 

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