block heater

   / block heater #1  

athomp

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Joined
Aug 5, 2009
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I have a 5740 that doesn't have a block heater so I got a magnetic heater for it. Is it better to stick it to the oil pan to heat the oil, or stick it to the side of the block to heat the coolant?
Thanks
 
   / block heater #3  
athomp,

I live in Texas and have a 2005 5740C, that I bought in 05. We don't have the kind of cold very often that we've experienced this past week or so, and therefore I never had the need to look for my block heater until now. I discovered the 5740 doesn't have a built in one about 5 days ago. Kind of like 4WD, you don't use it all the time, but when you need it, you really need it!! I handled it OK, but thought that Montana should have put one in at the factory!
 
   / block heater #4  
I have a 5740 that doesn't have a block heater so I got a magnetic heater for it. Is it better to stick it to the oil pan to heat the oil, or stick it to the side of the block to heat the coolant?
Thanks


Agreed. My dealer had placed my magnetic on the side of the block mounting plate and I cannot believe a little 250 watt heater could penetrate the steel plate and then the block with any substantive heat.

I have since moved it onto the oil pan, which is far thinner. In fact, I added an additional 250 watt magnetic heater and now have one on either side of the oil pan. At least I know the oil sump will pump warm oil.
 
   / block heater #6  
I would ask yourself- What do automobile and truck manufactures use?? Oil pan dipsticks, oil pan magnets or coolant block heaters

The answer is a coolant block heater.
 
   / block heater #7  
Yes, a freeze plug heater would be great. The OP asked where to place a magnetic heater he already has. 20-20 suggested the oil pan and I agreed.

In my experience, unless that magnetic heater is a 450watt variety, even then, it has almost no chance of producing much heat deep within the coolant, by placing it somewhere on the block. The likely location flat enough to actually stick would be near the pistons or connecting rods. Not a whole lot of effectiveness there, imo.
 
   / block heater #8  
I have a 5740 that doesn't have a block heater so I got a magnetic heater for it. Is it better to stick it to the oil pan to heat the oil, or stick it to the side of the block to heat the coolant?
Thanks

It's hard to find a flush surface to get enough contact surface area to transfer enough heatexcept may be on the oil pan.. Trying to heat 7 or so quarts of oil with even 450 watts i subzero temps is a lost cause.
The best thing to do is get a block heater.If you have an accessible core plug in the block, you can install a block heater in about a half hour. I have one on my Ford 4610 diesel and have it on a timer. it goes on at 2:30 pm and i feed the cows at 4:00 pm. The tractor starts in a half a turn.
block heaters cost ~$30 and you won't regret it.
 
   / block heater #9  
put an inline heater in the lower radiator hose. if it a mitsubishi you can find a block heater for that model. maka told me about one for mine.
 

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