How hot should the rear end on my 2005 Titan CC 4x4 with BT get while towing my 8,800 lb. camp trailer. After about 120 miles at 65 MPH yesterday, it was way too hot to touch. I'm on my first replacement and it only has about 4,000 miles on it.

Put in Amsoil severe gear 75w-140. It is much better than the 75w-140 they use from the factory. Mobil 1 I believe. I tow 8100# Couger and have the steel diff cover w/o getting that hot anymore. I am also installing a Mag-hytec diff cover this weekend. To answer your question you should be able to keep your hand on the diff cover w/o getting burnt.

 

I have a PML diff. cover and a temp. sending unit and temp. gauge. When I towed my utility trailer with a payload of about 1,000 lbs. and while climbing a 7% grade hill, the temp. went as high as 165 degrees. While cruising the temp. stays at 140 degrees. Also stays at 140 when not towing.

 

I would recommend keeping your hands off the differential cover after driving for any substantial period of time, particularly after towing, unless you want to be burned, as the diff cover, even with an aluminum cover, will be quite hot. Further, unless your hands are calibrated better than mine, the only thing you can tell is cold, cool, warm, hot, and !@#$%& hot. You can buy IR thermometers cheap these days.

 

Further, unless your hands are calibrated better than mine, the only thing you can tell is cold, cool, warm, hot, and !@#$%& hot. You can buy IR thermometers cheap these days.

LMAO... And Diffs are usally ******* hot.

 

I have a PML diff. cover and a temp. sending unit and temp. gauge. When I towed my utility trailer with a payload of about 1,000 lbs. and while climbing a 7% grade hill, the temp. went as high as 165 degrees. While cruising the temp. stays at 140 degrees. Also stays at 140 when not towing.

This is about right. It depends on the ambient temperature also. Mine runs around 140-150. I check it occasionally with my IR thermometer.

 

Put in Amsoil severe gear 75w-140. It is much better than the 75w-140 they use from the factory. Mobil 1 I believe. I tow 8100# Couger and have the steel diff cover w/o getting that hot anymore. I am also installing a Mag-hytec diff cover this weekend. To answer your question you should be able to keep your hand on the diff cover w/o getting burnt.

I'm sure you're a smart guy but it's hard to take the advice of someone who states:

1) Mobil 1 is crap.
** At worst, Mobil1 is marginally inferior to any other lubricants out there such as royal purple, amsoil etc.

2) You should be able to put your hand on your diff without getting burnt.
**I prefer testing methods that don't involve injury.

:cheers:

 

Put in Amsoil severe gear 75w-140. It is much better than the 75W-140 they use from the factory. Mobil 1 I believe. I tow 8100# Couger and have the steel diff cover w/o getting that hot anymore. I am also installing a Mag-hytec diff cover this weekend. To answer your question you should be able to keep your hand on the diff cover w/o getting burnt.

I really don't think they use Mobil-1 from the factory (Mobil-1 is as good as Amsoil in my humble opinion) although I agree with you that it shoud be changed if you have 4K miles to clear out the metal particles that will be on the plug and in the gear oil. With the stock aluminum cover you will get up to around 140 -150 Farenheit so you won't be able to keep your hands on it without a burn. Keep in mind that this is well within the specs of synthetic 75W-140 so no worries.

 

I would recommend keeping your hands off the differential cover after driving for any substantial period of time, particularly after towing, unless you want to be burned, as the diff cover, even with an aluminum cover, will be quite hot. Further, unless your hands are calibrated better than mine, the only thing you can tell is cold, cool, warm, hot, and !@#$%& hot. You can buy IR thermometers cheap these days.

I found the tongue to be much more sensitive to temperature variations and it should be used when ever possible. Of course the scrotum could be used in a pinch!

 

Dammit tox... I told you million times..no I don't need you test the temperature of my @$$ via your ultra accurate tongue method.

 

Dammit tox... I told you million times..no I don't need you test the temperature of my @$$ via your ultra accurate tongue method.

Man that is one nasty image!!! :gay:

 

That's what I've been trying to tell you...

Glad to see you've come to your senses.

 

How hot should the rear end on my 2005 Titan CC 4x4 with BT get while towing my 8,800 lb. camp trailer. After about 120 miles at 65 MPH yesterday, it was way too hot to touch. I'm on my first replacement and it only has about 4,000 miles on it.

Thanks to all, it sounds like 140-150 F is a good number. I do have a couple IR thermometers at work, just didn't have one handy when I was done towing my trailer. I'll check it next time and see what it is.

 

How hot should the rear end on my 2005 Titan CC 4x4 with BT get while towing my 8,800 lb. camp trailer. After about 120 miles at 65 MPH yesterday, it was way too hot to touch. I'm on my first replacement and it only has about 4,000 miles on it.

Check out this post. Some temperature info from a while back.
http://www.titantalk.com/forums/tit...ms/titan-general-discussion/23610-going-do-some-temp-monitoring-need-input.html

 

Towing my 5000# boat, my diff. gets to 170 in the summer. This is during and at the end of a 5 hour tow with lots of grades during the last hour. All interstate speeds. I change the fluid at the end and beginning of each season using syn(140) during the tow season. It always looks good at changeout.

 

I have a PML diff. cover and a temp. sending unit and temp. gauge. When I towed my utility trailer with a payload of about 1,000 lbs. and while climbing a 7% grade hill, the temp. went as high as 165 degrees. While cruising the temp. stays at 140 degrees. Also stays at 140 when not towing.

Nice set-up you have there. Where did you mount your temp gauge?