Derale Transmission Cooling Pan
I have a 2003 S10 that I recently did a 5.3 LSx swap & used the 4.3 transmission 4L60E.
I decieded to run a stand alone trans cooler with a fan that runs all the time to try a keep the temps down. I mounted it under the cab & it being 100 degrees outside I was curious to how hot the trans was getting so I bought a scan gauge which plugs in the OBD2 port & reads info from the pcm & driving around town & down the hwy it was getting to 210.
So I decieded to get the Derale pan with the tubes thru it that they claim will drop trans temps down 20-50 degrees.
They also claim it holds 2.3 more qts....BS my truck came with a deep pan from the factory like most trucks with the 4L60E so I actually had to buy the shallow pan filter to use the Derale pan so it really doesnt hold 2.3 more qts.
Nice finish,drain plug with magnet & a 1/8 pipe thread port for a temp sender & tubes thru the pan that are suppose to afford more cooling than a stock pan is what I got.
After installing the pan & filling with 6 qts of fresh fluid I went for a test ride....Same outside temps,same fluid,same temp gauge just a different pan & I was really disappointed to see the temp continue to climb to 224 & would have kept going if I didnt stop driving it.
I called Derale & got the runaround but thats another chapter in the book of BS Stuff that dont work.
Bottom line I paid for a pan with a drain plug.
Did you use the cooler with the derale pan or was it pan only?
Was original pan aluminum or steel? If aluminum it could explain why temp increased. Aluminum will run cooler than steel.
Also why not put cooler on the exit side of radiator, that way its remving heat already taken out by radiator. I.e., it is cooling a pre cooled fluid rather than takling the entire cooling task.
I have a Derale cooler with a fan mounted under the cab of the truck,fans runs as soon as the engine is started,it takes a little while to warm up but once it reachs 190 it never goes down it always goes up & get hotter.
Stock pan is steel & so is the Derale pan.
Radiator runs at 200 so I dont need it running into a already hot radiator to pre heat the fluid.
If you are running 210-224 with only aux cooler it means the inlet temp is much higher and the cooler is only lowering the exit temp to 210 from a higher temp than that.
If you run into radiator first you should be entering your aux cooler at 200ish and the cooler can lower from there. Most likely 180 or 190.
It is very clear that the aux cooler by itself does not have enough capacity.
If you live in the snowbelt, the radiator will also bring the fluid to operating temp. You do need to get oil hot enough to boil moisture.
I am getting a plate/fin cooler as they are more efficent than a tube/fin cooler.
The point of this thread is the pan does not do anything to lower trans temps as claimed.

I have a two core aluminum radiator with dual 11 inch Spal fans & a 185 thermostat & it pretty much is dead on 200 all day long,running the ac.
When I had a 165 stat in it would get to 210 or above in traffic beacuse the water wouldnt stay in the rad long enough to cool.
Last edited by ZQ8LS1; Aug 2, 2012 at 11:24 PM.
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My parents have turned their heat up to 80 degrees in the winter when it's -20 outside so they can say "it's a 100 degrees colder outside"
I bet everyone here cares, too.
lmao 





