Has anyone installed an aftermarket deep aluminum tranny pan with cooling fins like the Mag Hytec or BD diesel?
I’m wondering what kind of drop in transmission temperature can be expected with one of these. There has to be some drop in temp with the extra fluid capacity and the fins should help a little as well. Summertime is close and i’m hoping to bring my tranny temps down from high’s in the 240’s.

None.

No, there does not. Extra fluid takes longer to heat up, but by the same logic once it does heat up it takes longer to cool down. So your gain is nothing at all.

Mark, is it detrimental to see spikes to 245 degrees in the fluid? While towing on flat grades my tranny temps settle in between 218 to 228 degrees. While pulling a mountain grade, which I do often here in Colorado, my fluid temperature has spiked as high as 245 degrees but then starts to cool down after I crest the top. I have read that this temperature is not good for either the fluid or the transmission.
So, if I have an extra 4 to 6 quarts of fluid from a deep pan and the transmission fluid only spikes to, let’s say 235 degrees, wouldn’t that be better for the fluid and the transmission itself? Yes, it will take longer to cool down but it wouldn’t be reaching those temperatures that are not good from what I’ve read.
Yes, the pans look cool but you can’t even see them under the truck, so to me, it doesn’t matter what it looks like. I’m looking to protect my huge investment in my truck and a few hundred more $ would be worth it to me. I understand that there is a balance between final cost and how the average driver will use their truck when considering the development of a transmission.

Just wondering.

I have considered installing a stacked plate auxiliary cooler but a pan would be so much easier and reliable (fluid leaks) if it did indeed control a 10 degree spike while pulling a grade with 6 quarts of extra fluid. I have read a lot of real world tests that show these pans can actually reduce the fluid temperature by 10 degrees in this type of scenario and these are test by folks who are not affiliated with a pan manufacturer. According to what Mark said, it would appear that the tranny would take longer to heat up with more fluid.
The question is, are 245 degree spikes detrimental to this particular transmission? I have read that it is, as a general rule, so I would like to prevent those spikes. Is 220 sustained degrees bad for this transmission? Again this is normal towing temp on mine. I have never read anywhere on this forum where someone definitely knows, just opinions. I have read many times that running fluid temps of 220 degrees can cut the life of your transmission in half. It is well known by now that the new Super Duty’s run a lot hotter than previous generations but no talk on how the tranny has been redisigned to handle the higher temps.
There is one thread where someone went into limp mode pulling a grade from high temperatures when it wasn’t even a hot outside temperature. Many more have seen high “spikes” in tranny temps like I have, as well.
i’m not In the camp that if Ford designed it, it can handle it. There is always a balance in cost, durability, average consumer use and staying competitive by manufacturers and this is how aftermarket companies have thrived in many instances.
Although opinions are great sometimes, I’d love to hear if anyone on this forum has real world before and after temperature readings with installing one of these pans.