Mag-Hytec double deep transmission pan
I have a '05 Dodge 2500 2WD. Since it is primarily used for pulling my 9K lb 5th wheel trailer, I'm considering adding a Mag-Hytec double deep transmission pan. They report it to be 5 1/4" deep so it ...
Forum Discussion
Have you ever felt under your truck after a hard pull? Is the air underneath there nice and cool? Or is it HOT? Do you use hot or cold air to cool things?
For part of my engineering career I was an automatic transmission cooling engineer. I looked at using the pan for cooling. It doesn't work. When the truck is working hard, which is when you want the cooling, the air around the transmission is HOT. Don't give me the BS that cold air flows under the truck and it can't be hot there. I measured these temperatures. It is routinely over 200F around the trans pan. How much cooling will that do?
I've also looked at the flow inside the pan. A boundary layer exists in the fluid against the pan walls. This is a layer of stagnant fluid. It acts as an insulator, greatly slowing heat flow. So heat stays in the pan. Even if the heat got to the pan wall, the air outside it is 200F.
If you want to cool the transmission, you need a better aux trans cooler. I'm not familiar with the Dodge cooler, but I'll bet you could replace it with a better one and do a MUCH better job of cooling the transmission.
For part of my engineering career I was an automatic transmission cooling engineer. I looked at using the pan for cooling. It doesn't work. When the truck is working hard, which is when you want the cooling, the air around the transmission is HOT. Don't give me the BS that cold air flows under the truck and it can't be hot there. I measured these temperatures. It is routinely over 200F around the trans pan. How much cooling will that do?
I've also looked at the flow inside the pan. A boundary layer exists in the fluid against the pan walls. This is a layer of stagnant fluid. It acts as an insulator, greatly slowing heat flow. So heat stays in the pan. Even if the heat got to the pan wall, the air outside it is 200F.
If you want to cool the transmission, you need a better aux trans cooler. I'm not familiar with the Dodge cooler, but I'll bet you could replace it with a better one and do a MUCH better job of cooling the transmission.
