I've ordered a transmission temperature gauge as well as a pod that mounts on the pillar. However, the pod has an opening for two gauges. I'm going with the "Autometer" brand, "Z" series.

I've looked at a 2nd gauge to fill the other spot and am considering a differential temperature gauge.
http://www.autometer.com/cat_gaugelist.aspx?sid=12&opid=2&szid=2

I know some people that have added an oil pressure gauge in the 2nd spot, water temperature, tach. etc, but it seems that would just be duplicating the OEM gauges I already have.

Anyone added a differential temperature gauge? Seems like there would not be a port to install the sensor other than the drain / access plug. I'm only considering such a gauge as I do tow a travel trailer.

Any input is appreciated!

 

Most just tap a hole in the diff cover in a area that won't interfere with the "guts" and just use a regular oil temperature sender just like the one you got for the tranny.

In all honesty you really don't even it it.

How ever a oil pressure gauge would be more legit. Most of the guages on your dash are nothing more than a glorified idiot light, this is especially true of the oil pressure gauge.

Once the motor registers something like 7 psi, the oil pressure "switch" closes and the guage snaps to the middle position.

 

I recently installed a Mag-Hytec rear diff cover that has a sender port built in. I have been considering installing a diff temp guage also, but still not sure if its worth it. If you do some towing you might want to consider an aftermarket diff cover. The Mag-Hytec holds about 1 additional quart of fluid and has cooling fins as part of the cover. Just a thought.

 

The Mag-Hytec cover sounds like the way to go. I didn't realize they came with a sender port built in.

PD52 - where did you buy / order yours from?

The Ford OEM rear cover is junk. The paint all flaked off in the first couple of months.

 

Hello rcknrbn, I got mine from mag-hytec online. Here is the link: http://www.maghytec.com/index.asp?PageAction=VIEWCATS&Category=4

Also, I uploaded a couple photos of it in my gallery if you want to see mine. In the photo of the inside of the cover, you can see the little sender hole at the top, on the inside. I only have had it on for about 2 weeks and so far so good! It's a great looking mod. Anyways, hope this helps and let me know if you have additional questions.