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Old 06-10-2020, 12:08 PM
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Default 2002 7.3 Oil Temp?

Have had this truck for little over a year now and it has the Edge CTS in it for the gauges only, no program. Motor is stock with the exception of the exhaust and filter. On a 80 to 85 degree day, normal driving, running empty, the oil temp according to this Edge, will sit any where between 208 to 215 but cool off pretty quick when stopped at red lights, or putting through town. Pulled my 16' trailer with a couple thousand pounds of lumber (estimated weight, building a pool deck) and the temp stays the same as if I didn't have the trailer. Are these normal temps for this auto truck? It is the crew cab Lariat, 4x4, 33" tires. During all this the coolant temp stays normal and tranny temp at it's highest has only been 180. Thanks!
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Old 06-10-2020, 12:31 PM
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I'm not mad at that. Oil always should run hotter when OP temp is reached
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Old 06-10-2020, 01:05 PM
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I'd be happy with that. Around town I'm around 210* as well, but towing my heavy toy hauler through the grades I see an average of 230*, and up to 287* one time before I found some underlying issues and had them fixed.
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Old 06-10-2020, 02:52 PM
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Great! That makes me feel better about it!
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Old 06-11-2020, 08:53 AM
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Has anyone come up with a better oil cooler for the 7.3"s? I would think lower temps if possible would help the life span of the oil, which would help the motor as well? Just a thought on the long drive's home everyday.
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Old 06-11-2020, 09:40 AM
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The HPOP has more to do with lifespan of the oil than temperature does.
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Old 06-11-2020, 09:45 AM
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Quote:
Originally Posted by Arisley View Post
The HPOP has more to do with lifespan of the oil than temperature does.
Can you elaborate? I am assuming you are meaning the way the hpop works in general, meaning there really isn't anything to be done about it?
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Old 06-11-2020, 09:52 AM
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No the HPOP uses the oil to drive the injectors, essentially turning it into a hydraulic oil, which means the oil is not only used for lubrication, and heat dissipation, but also as a hydraulic oil, which will wear it out faster.

Supposedly... and idk what's the deal with it, or when it's coming out or anything, but DieselSite is making a remote oil cooler to replace the factory one with a 6.0 style cooler, suppose to be much more effective and easier to service.

CSD also makes a remote oil cooler kit, but its air to oil, not a heat exchanger.
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Last edited by Lt.Dan; 06-11-2020 at 09:55 AM.
  #9  
Old 06-11-2020, 09:58 AM
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That is true.

Will have to check out the oil cooler your talking about.
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Old 06-11-2020, 03:38 PM
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Yeah, using the oil as hydraulic fluid shears it a lot faster.
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Old 06-27-2020, 04:24 PM
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For reference, my truck weighs 13,780 lbs with cargo, has 4.88 gears and runs 210 degrees on the interstate at 3k rpm 80mph. uphill or downhill does not matter unless I am on the throttle harder than need be.

I have noticed that EOT is linear with the rpms of the engine. EGT's however seem to be linear to how far you press the pedal and how fast.
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Old 06-27-2020, 10:23 PM
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I have noticed that as well. As RPMs go up, EOT does as well. Now I have also noticed that 180* EOT will have less EGTs, but 230* EOT will have higher EGTs, which makes sense in the fact that there is all-around more heat in the engine with the EOT being higher.
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