sweetdiesel

That's better
Aug 6, 2006
10,390
0
0
52
Thailand
Oil temp and water temp dont make sense? :confused:

.


Why is that? The water temp takes forever to heat up with the new rad and no t-stats. Oil pressure is also not being heated via the water.

Oil pressure was average of 40 psi and max of 56 psi it idles at 19 psi.

Are you saying it should be lower or higher?:confused:
 

hondarider552

Getting faster
May 28, 2008
10,627
2
36
34
Arizona
Saying atleast the oil temp should be higher. Not dogging at you Simon, but no way can oil temp be a mere 114* after a 130mph run. :D
 

RedHotGMC

stock
Jan 16, 2012
339
2
18
Northern Utah
Now that I have an Insight, oil pressure is a PID I selected, and the oem gauge is spot on, all the way from 14psi-75psi that I have seen.

Unless its my gauge.. it seems to be 30psi higher than what my edge reads. Im pretty confident my oil pressure doesnt run at 120 psi when its cold. But I think thats because my stepper motor was misaligned.
 

duratothemax

<--- slippery roads
Aug 28, 2006
7,139
10
0
Wyoming
I've used aftermarket gauges and had different results? The gauges on the truck IMO are poor at best I've calibrated them against test equipment at my work and thought " ya it's close" how have you tested it??

yeah, actually I have. And it IS accurate.

The pointer on the gauge cluster matches to what the ECM is reading on the databus. And then that all also matches with a mechanical gauge.

That applies to 2003-2007 trucks. I dont know if the 2001-2002 oil pressure gauges are accurate or not.

If your 2003-2007 truck oil pressure gauge is way off of what the databus is reading, or what a mechanical gauge is showing, then your oil pressure gauge stepper motor is bad, or the pointer is misaligned.
 

BH in AZ

New member
Jul 10, 2010
8
0
0
Temp Report

In one of my posts last month on installing an Edge Insight monitor, I mentioned that I would be towing my trailer and have some numbers to report. I ended up doing the trip on August 22nd.

Background Info:
- Truck is mostly stock (2004 LLY) with an AFE Mouthpiece
- Stock size tires
- Outside air temp was in the mid to upper 80s F (Rye Creek Climb)
- Trailer is a conventional travel trailer just under 7,000 lb loaded.

The route was Arizona Highway 87 (Beeline Highway) north bound, that climbs out of Phoenix in route to Payson, Az. The climb starts at Rye Creek and ends about 5.5 miles before reaching Payson. I think the grade is about 6 %. The length is about 4.5 miles. The time of the reported measurements are at the end of the climb. Total climb is close to 1,500 ft, with an elevation of about 4,600 at the top of the climb. Speed was about 55 to 60 mph in order to keep the EGT temp at 1,300 degrees or below.

Engine Coolant Temp 224 degrees F
Enging Oil Temp 272 degrees F

There are several other long hills before starting the Rye Creek climb. Oil temp reached about 260+ degrees F on those climbs, Engine Coolant Temp was about 213 degrees and Trans Temp was 206 degrees on one hill. Another well known climb for us in AZ is on highway 260 past Payson that starts at Christopher Creek and tops out on the Mogollon Rim. Oil temp on that climb reached 263 degrees F and Engine Coolant was 213 degrees. Air temp was in the upper 70's.

What should I conclude from temps of 260 to 270 degrees when towing?

I consider this a medium load at best. I was not expecting to see temps of 270+ degrees. I am currently using conventional Delo oil. Now that I see how high the oil temp gets on climbs, I wonder if I should be using something like Mobil 1 or Scheaffer synthetic?

The first picture shows the end results from the Rye Creek climb.

The second picture shows the end results from the Mogollon Rim climb. I think they do a good job documenting what Super Diesel is saying.

The third picture shows an example of the truck with no load, normal cruise between 55 to 60 mph. It was taken just east of the Sunrise Ski Resort on a mostly flat section of Highway 260 at 9,200 ft, outside temp in the low 60's.

The last picture was taken at a gas station the day of the trip to show what size load I was towing. It is nothing that special, compared to the oil temps reached.
 

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  • Mogollin Rim Climb.jpg
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  • Sunrise Cruise.jpg
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  • Load Size.jpg
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duratothemax

<--- slippery roads
Aug 28, 2006
7,139
10
0
Wyoming
In one of my posts last month on installing an Edge Insight monitor, I mentioned that I would be towing my trailer and have some numbers to report. I ended up doing the trip on August 22nd.

Background Info:
- Truck is mostly stock (2004 LLY) with an AFE Mouthpiece
- Stock size tires
- Outside air temp was in the mid to upper 80s F (Rye Creek Climb)
- Trailer is a conventional travel trailer just under 7,000 lb loaded.

The route was Arizona Highway 87 (Beeline Highway) north bound, that climbs out of Phoenix in route to Payson, Az. The climb starts at Rye Creek and ends about 5.5 miles before reaching Payson. I think the grade is about 6 %. The length is about 4.5 miles. The time of the reported measurements are at the end of the climb. Total climb is close to 1,500 ft, with an elevation of about 4,600 at the top of the climb. Speed was about 55 to 60 mph in order to keep the EGT temp at 1,300 degrees or below.

Engine Coolant Temp 224 degrees F
Enging Oil Temp 272 degrees F

There are several other long hills before starting the Rye Creek climb. Oil temp reached about 260+ degrees F on those climbs, Engine Coolant Temp was about 213 degrees and Trans Temp was 206 degrees on one hill. Another well known climb for us in AZ is on highway 260 past Payson that starts at Christopher Creek and tops out on the Mogollon Rim. Oil temp on that climb reached 263 degrees F and Engine Coolant was 213 degrees. Air temp was in the upper 70's.

What should I conclude from temps of 260 to 270 degrees when towing?

I consider this a medium load at best. I was not expecting to see temps of 270+ degrees. I am currently using conventional Delo oil. Now that I see how high the oil temp gets on climbs, I wonder if I should be using something like Mobil 1 or Scheaffer synthetic?

The first picture shows the end results from the Rye Creek climb.

The second picture shows the end results from the Mogollon Rim climb. I think they do a good job documenting what Super Diesel is saying.

The third picture shows an example of the truck with no load, normal cruise between 55 to 60 mph. The was taken just east of the Sunrise Ski Resort on a mostly flat section of hiighway 260 at 9,200 ft, outside temp in the low 60's.

The last picture was taken at a gas station the day of the trip to show what size load I was towing. It is nothing that special, compared to the oil temps reached.

Yikes. I would look into an oil cooler sooner rather than later. Seeing under 40psi of oil pressure at 2400 rpm is a little unsettling... At 270* oil temp, 39psi oil pressure, and 1300* EGT pulling a load up a hill I'd bet your pistons were not having a good time at all.
 

BH in AZ

New member
Jul 10, 2010
8
0
0
...............
......... Now that I have an Insight, ...................

Brian,

Did you use your existing temp senor and use the custom setup in the Edge MyStyle software to map raw readings to the temp values or did you also purchase an Edge Tempurature Sensor and select the predefined mappings from the MyStyle software?

If you used the Edge brand sensor, did you do anything to verify the accuracy of the readings?

I went with the Edge brand sensor and selected the predefined mapping called Tempurature Sensor (Brass). There were no instructions in the box on that, but I called Edge and they confirmed that was the correct setting for their temp sensor.

When I set it all up in August, it was about 107 degrees and that was about what the Temp sensor showed so I know the reading is good at that range. I did not do any kind of verification for higher temps.

In hindsight, I would put a cooking thermometer in a pot with cooking oil, heat it up to about 280, then take it outside and stick the end of Edge probe in the oil before installing the probe to see if it displays about the same temp. My brother may be getting and Edge Temp Sensor for his Insight so I might have an opportunity to verify the reading then, or get motivated and pull the sensor on mine and do the test.

I am surprised I got such high readings with not that big of a load. That makes me wonder if the mapping set up is accurate so that I get a valid temp reading. Odds are it is right, but ummm.


Ben,

Thanks for the heads up on the oil pressure. That should be an easy reading for others to report since you say the GM gauge is accurate and all the trucks have an oil pressure gauge. What kind of pressures are others getting when towing? Assuming my numbers are accurate, I suspect they are about like me. I doubt that my truck in unique. They may also be pulling high oil temps and just don't know it.
 
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BH in AZ

New member
Jul 10, 2010
8
0
0
How are you getting oil temp readings on the Insight? Is it an add on feature?

GM does not have a sensor/PID for oil temp on the Duramax, so the Edge Insight can not display oil temp as part of the basic things that it does.

However Edge does allow the "option" to add additional sensors, such as EGT, pressure and/or temp for an extra cost. First you have to buy an EAS Starter cable that runs from the display unit in the cab to the engine compartment. Normally you would buy that as a kit with the EGT probe. Cost for the EAS Starter Cable and EGT probe kit is $129. (You can also get just a stand-alone EGT probe for less money, but then you can not add additional sensors. You can also buy the EAS Starter cable by itself.)

You can avoid the EGT probe if you want, but normally you would piggy back any temp sensor on to the EAS Starter Cable that came with the EGT probe kit. To do that, you then need to purchase an Edge EAS Universal Sensor Input Cable. This costs $149 and attaches to the EAS Starter cable under the hood. It has two leads that allow you to connect up to two sensors. You can then purchase Edge sensors or use your own. The Edge Temp sensor runs $39 and you still have one lead left for an additional sensor connection. If you want to add a third or fourth sensor, then you need to buy an additional EAS Universal Sensor Input Cable for another $149.

Once you have all the hardware, then you need to set it up using the Edge MyStyle software program running on your PC. Basically this maps the raw sensor values (voltage or resistance) to the temp or pressure values that are displayed on the screen. You can choose predefined tables for Edge brand sensors or you can create your own custom tables for non Edge sensors. There is very little to do for the Edge EGT probe, and it is not difficult for the other sensors. According to Edge, most sensors from other vendors come with mapping tables in their documentation.

It sounds more complicated than it is. The downside as mentioned earlier is that it gets on the pricey side.

So, here is a typical setup:
- Edge Insight CTS Touchscreen Monitor $399
- Edge EAS Starter Cable and EGT Probe (98603) $129
- Edge EAS Universal Sensor Input Cable (98605) $149
- Edge Temp Sensor (98608) $39
- Edge Optional Dash Pod Mount (28300) $40
- Edge CTS Adapter for Pod Mount (98003) $10

Total before any discounts is $766

I think Edge has a 15% promotion going on right now till the end of October (check first!) and some vendors may give forum members an addtional 10% (doesn't hurt to ask).

Note: The Edge website product page for the Insight and LLY engine shows Oil Temp as a supported parameter. This is in ERROR. I mentioned it to them in August and about a week ago, but as of this AM, it has not been corrected. I wish there were a PID for oil temp, it would have saved me some bucks. They did not include Oil Temp as a PID for the other Duramax engines.
 
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malibu795

misspeelleerr
Apr 28, 2007
8,249
552
113
42
in the buckeye state
re-reading some thread posts in here...

question

has anyone done anything to limit radiant heat from the manifold to the water pump discharge pipe? seeing it is less then 1/4" off the manifold i am sure it is getting heat transfered into the pipe..
 

hondarider552

Getting faster
May 28, 2008
10,627
2
36
34
Arizona
From what I remember Mike L saying, yes the 6 speed trans coolers will work for a oil cooler.

I wouldnt mess with the 5 speed coolers as they are too small to make an impact, IMHO.
 

malibu795

misspeelleerr
Apr 28, 2007
8,249
552
113
42
in the buckeye state