98 suburban block heater

- J
- J Oat
  
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posted
19 years ago

Thu, Oct 28, 2004 5:36 PM

can someone tell me if the block heater is heating the coolant or the oil in the engine ?

i always thought it heats the oil but someone just told me otherwise.

TIA

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- J
- jdoe
  
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posted
19 years ago

Thu, Oct 28, 2004 8:05 PM

- E
- el Diablo
  
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posted
19 years ago

Thu, Oct 28, 2004 10:28 PM

There are two types, there is the old electric dip stick that heats the oil. But they are not very effective. The best units are the type that either are located in the lower radiator hose or in the block in place of a freeze plug.

Brian

- J
- jdoe
  
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posted
19 years ago

Fri, Oct 29, 2004 11:11 AM

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