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Old 11-01-2014, 02:00 AM
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Smile Heavy Duty Engine Cooling Defined?

My 2014 Grand Cherokee Limited, 5.7L V-8 has the factory installed Group IV Towing Package. As part of the tow package, it lists "heavy duty engine cooling". So what exactly is this? The owners manual is no help. I've seen confusing and conflicting comments about it in this Forum. Other vehicle brand SUV's list engine cooling components such as transmission fluid cooler, engine oil coolers, even power steering fluid coolers. What is a cooler? Just a fan? or an installed component similar to a radiator that the tranny fluid or engine oil circulates through for cooling. Is the Jeeps radiator bigger than than that of a Jeep without the tow package/heavy duty engine cooling?
Somewhere, somehow, this should be described. But where, I've googled it for hours and can't find answers other than some links to Australian jeeps with a little auxillary fan installed.
If I'm towing a 5000 lb trailer I would feel a lot better knowing that the engine and tranny fluids are not getting overheated and I'd like to know how that is accomplished. Can anyone answer these questions. I know there are many forum members out there that are just as confused about this as I am. Thanks in advance for some enlightenment!!

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Old 11-01-2014, 09:20 AM
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Re: Heavy Duty Engine Cooling Defined?

I thought this was pretty clearly defined in your other thread...

Trailer Tow Group IV Package
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Old 11-01-2014, 02:29 PM
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Re: Heavy Duty Engine Cooling Defined?

^^^^what he said.........
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Old 11-02-2014, 01:12 AM
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Re: Heavy Duty Engine Cooling Defined?

Quote:
Originally Posted by Willybee61 View Post
My 2014 Grand Cherokee Limited, 5.7L V-8 has the factory installed Group IV Towing Package. As part of the tow package, it lists "heavy duty engine cooling". So what exactly is this? The owners manual is no help. I've seen confusing and conflicting comments about it in this Forum. Other vehicle brand SUV's list engine cooling components such as transmission fluid cooler, engine oil coolers, even power steering fluid coolers. What is a cooler? Just a fan? or an installed component similar to a radiator that the tranny fluid or engine oil circulates through for cooling. Is the Jeeps radiator bigger than than that of a Jeep without the tow package/heavy duty engine cooling?
Somewhere, somehow, this should be described. But where, I've googled it for hours and can't find answers other than some links to Australian jeeps with a little auxillary fan installed.
If I'm towing a 5000 lb trailer I would feel a lot better knowing that the engine and tranny fluids are not getting overheated and I'd like to know how that is accomplished. Can anyone answer these questions. I know there are many forum members out there that are just as confused about this as I am. Thanks in advance for some enlightenment!!
"What is a cooler?", a cooler is a heat exchanger that transmits heat from one medium to another. In the automotive world it is generally a radiator or cooling fins. Open your bonnet and look behind the grill. You see a host of radiators, some hidden, and a fan. What exactly the V8 has, I don't know but the CRD has five cooling systems, engine coolant, engine oil, transmission oil, steering fluid, inter-cooler and air-con. The V8 would not have an inter-cooler.
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