Ok, 2000 7.3 auto. Bone stock. Never given me an issue. Was backing 14k 5th wheel camper up a hill to get it in it's site. It barfed up about a quart of trans fluid, and got to about 220. I didn't feel like I was working it that hard. It came out of the overflow tube - and pulling the trailer back home (after adding the missing fluid) it ran at about 185 which is normal. A couple of guys told me that "reverse is really hard and creates heat" which is ok - I'll do it in low next time - what do y'all think?

 

Reverse Up hill is definitely a heat maker. You will probably be fine, just pay attention to fluid levels and condition.

 

Thanks man.

 

The E4OD was well known for puking fluid out the front main seal under those conditions. At least your 4R100 puked it out the overflow.

 

Overflow? What overflow? I've never seen an overflow on a transmission. Where is it located?