Ok, I just had the front pinion seal replaced and the leak is gone for now. I crawled under there today to feel for wetness and the front diff was pretty warm and much warmer right at the yoke. So I went to the rear and it was warm also, but not as warm. couple questions as I tend to worry about things.

1. is it normal for the front to run a little warmer unloaded because there is less fluid and its a smaller ring gear?

2. what are acceptable temps?

3. I am getting ready to visit the family for x-mas and I will be making a 600mile trip in the morn. I will have my infrared laser temp gun with me so I can check them when I stop. should that work good enough?

thanks guys