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Temps pre & post diff cover change #5194381 08/23/19 05:51 AM
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kehyler Offline OP
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Hi,

I'm wondering if anyone has taken temperature measurements pre & post a diff cover change to see if there evidence that the diff cover change reduces oil temperatures?

Thanks!

-kehyler

Re: Temps pre & post diff cover change [Re: kehyler] #5194390 08/23/19 06:02 AM
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jeepman3071 Offline
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As in changing the cover itself to an upgraded version for better cooling or just changing the fluid?

When I changed the fluid on my Jeep Cherokee XJ's rear diff 8 years ago or so I used a temp gun and the temps were about the same. The fluid drained was what I would assume to be the factory fill at 84k miles and the fluid that replaced it was Redline 75w90. I was happy to get out all of the break-in material though I saw floating around in there. I changed the fluid again at 150k miles and it looked almost brand new still. thumbsup


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Re: Temps pre & post diff cover change [Re: kehyler] #5194391 08/23/19 06:04 AM
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atikovi Offline
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Unless the old diff cover is caked in grease and mud I can't imagine a new cover would change oil temperatures any.

Re: Temps pre & post diff cover change [Re: kehyler] #5194401 08/23/19 06:17 AM
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jjblbi Offline
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Look for diff cover youtube videos posted by Banks Engineering. Some interesting information regarding temps, flow and foaming >> stay stock!

Re: Temps pre & post diff cover change [Re: kehyler] #5194410 08/23/19 06:28 AM
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Kira Offline
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I saw a diff on a show car which featured a cooling coil.....appx. 4" X 6", bent pipe with fins like many an old Chrysler power steering pump had.

I had no idea how the fluid was moved through the pipe. Perhaps it had an impeller like a lawn mower engine.

Re: Temps pre & post diff cover change [Re: jjblbi] #5194420 08/23/19 06:48 AM
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Astro14 Offline
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Originally Posted by jjblbi
Look for diff cover youtube videos posted by Banks Engineering. Some interesting information regarding temps, flow and foaming >> stay stock!


+1

Most aftermarket covers make things worse.


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Re: Temps pre & post diff cover change [Re: kehyler] #5194470 08/23/19 08:01 AM
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64bawagon Offline
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I wish I had seen the Banks videos back before I bought that expensive cover for my 2500HD. I could have saved some $$$


64 Chevy wagon, 10 Jeep Wrangler, 18 Silverado 1/2 ton
Re: Temps pre & post diff cover change [Re: kehyler] #5194480 08/23/19 08:21 AM
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RamFan Offline
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I can't imagine a diff gets hot enough where over heating is a problem to begin with. Nothing cooler than Clear Gearz on an old muscle car though.



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Re: Temps pre & post diff cover change [Re: kehyler] #5194482 08/23/19 08:26 AM
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atikovi Offline
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That's different. Though, one minute would have been long enough.

Re: Temps pre & post diff cover change [Re: jjblbi] #5194614 08/23/19 11:18 AM
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2015_PSD Offline
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Originally Posted by jjblbi
Look for diff cover youtube videos posted by Banks Engineering. Some interesting information regarding temps, flow and foaming >> stay stock!
Except he never proved anything--no test results that I ever saw posted and foaming happens just as much with OEM covers. I do not see that he proved or disproved anything.

In the end, it was a glorified sales pitch for his "new and improved" cover.


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Re: Temps pre & post diff cover change [Re: Astro14] #5194837 08/23/19 03:31 PM
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kehyler Offline OP
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Originally Posted by Astro14
Originally Posted by jjblbi
Look for diff cover youtube videos posted by Banks Engineering. Some interesting information regarding temps, flow and foaming >> stay stock!


+1

Most aftermarket covers make things worse.


I think the lesson of that video was stay curved.

I'm considering this one: https://www.summitracing.com/parts/bmm-40298/overview/

Re: Temps pre & post diff cover change [Re: RamFan] #5195057 08/23/19 09:33 PM
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Originally Posted by RamFan
I can't imagine a diff gets hot enough where over heating is a problem to begin with. Nothing cooler than Clear Gearz on an old muscle car though.

.
Pretty cool video.....until I skipped to near the end where the Clear Gearz cover started leaking! He had a choice word after he parked and crawled under the car...and the camera caught it all! LOL!

Re: Temps pre & post diff cover change [Re: 2015_PSD] #5195129 08/24/19 01:54 AM
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ctechbob Offline
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Originally Posted by 2015_PSD
Originally Posted by jjblbi
Look for diff cover youtube videos posted by Banks Engineering. Some interesting information regarding temps, flow and foaming >> stay stock!
Except he never proved anything--no test results that I ever saw posted and foaming happens just as much with OEM covers. I do not see that he proved or disproved anything.

In the end, it was a glorified sales pitch for his "new and improved" cover.



I don't think he ever finished the series. Or if he did I missed the final video. I think the last I saw was that they burned up their dyno working on them.


Last edited by ctechbob; 08/24/19 01:56 AM.

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Re: Temps pre & post diff cover change [Re: kehyler] #5195166 08/24/19 05:39 AM
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kehyler Offline OP
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Let's try and get back on topic, which is the pursuit of data-verification of lower temperatures.

Would we admit the following experiment as valid:

(1) drive the same stretch of long highway multiple times & measure the temperature of underside of the differential (not the cover) with an infrared temperature sensor?
(2) change the differential cover & fluid
(3) drive the same stretch of long highway multiple times (at same ambient temperature) & measure the temperature of underside of the differential (not the cover) with an infrared temperature sensor?

When then compare the temperatures obtained in (1) against those in (3) to see if the fluid cooler.

Re: Temps pre & post diff cover change [Re: kehyler] #5195167 08/24/19 05:49 AM
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spasm3 Online Happy
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Originally Posted by kehyler
Let's try and get back on topic, which is the pursuit of data-verification of lower temperatures.

Would we admit the following experiment as valid:

(1) drive the same stretch of long highway multiple times & measure the temperature of underside of the differential (not the cover) with an infrared temperature sensor?
(2) change the differential cover & fluid
(3) drive the same stretch of long highway multiple times (at same ambient temperature) & measure the temperature of underside of the differential (not the cover) with an infrared temperature sensor?

When then compare the temperatures obtained in (1) against those in (3) to see if the fluid cooler.


I think you would have to change gear oil first, put the old cover back on, then check temps. Otherwise you are comparing worn possibly lower viscosity sheared oil against new oil with the new cover.


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