I was thinking of adding a auxiliary transmission cooler, due to my average trans fluid temps being 190-200 degrees. This is the average temp while driving down the highway and normal highway speeds, not towing anything and no load in the bed on relatively flat ground. So my question being, sure the cooler would be fine in the summer time on a 100 degree day, but what about in the winter time on a 30-40 degree day? Can I over cool the transmission? Will over cooling the transmission harm the transmission or fluid? I don't want to fix one problem, but create another.
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-2007 F-150 XLT SuperCrew 4x4 5.4L 6.5' Bed
-Bilstein 5100's All The Way Around, Front set at 2" lift
-Gryphon, custom tuned by Bill at PHP
-AirAid CAI
-Flowmaster 3" Cat-Back with 50-series (thinking of changing to a 40-series or a Magnaflow)
-Wig-Wag Headlights and Tail Lights
-Line-X
I don’t think you’ll over cool in the winter. What about the trucks that come with a transmission cooler from the factory. You’ll be OK
My truck does have the factory transmission cooler / tow package. I can't imagine how hot it would be with out it.
__________________
-2007 F-150 XLT SuperCrew 4x4 5.4L 6.5' Bed
-Bilstein 5100's All The Way Around, Front set at 2" lift
-Gryphon, custom tuned by Bill at PHP
-AirAid CAI
-Flowmaster 3" Cat-Back with 50-series (thinking of changing to a 40-series or a Magnaflow)
-Wig-Wag Headlights and Tail Lights
-Line-X
The only time you can overcool it is if it doesn't reach the minimum temperature to allow it to shift into OD and allow the converter to lock.
What temperature would that be? As it is now, on cold winter days it averages about 150 degrees. I want my temp to be below 175 in the summer but still within operating range in the winter.
Along with a full flush of new ATF. I got a case and a half of Valvaline full synthetic ATF Mercron V at my local O'Rilies for $56. The Mobile 1 ATF was $8/quart and the Royal Purple was $11/quart. hopefully the Valvaline will work just as well... even though I would have liked the others, the Valvaline was priced right...
Does yours not have a cooler bypass valve on it? I know mine does, it doesn't allow the fluid to flow through the cooler until it reaches a certain temp. So you should be perfectly fine.
I was thinking about putting in a larger cooler myself because I was towing through hills today and my temp was getting around 220, I had to stop for a bit and let it cool. That was mostly uphill tho, on level ground it was about 185-195.
__________________ 2004 F150 Lariat Supercrew 4x4
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Yes...you can not 'overcool' a tranny on a '04-newer truck. They have a thermostat in the lines that run to the cooler which simply returs the fluid straight back to the tranny until it is up to a certain temp. No, I don't know what the temp is.
Yes...you can not 'overcool' a tranny on a '04-newer truck. They have a thermostat in the lines that run to the cooler which simply returs the fluid straight back to the tranny until it is up to a certain temp. No, I don't know what the temp is.
Thanks! Thats what I needed to know! The bypass will regulate the temp until it gets too hot, then sends the fluid to the cooler.
__________________
-2007 F-150 XLT SuperCrew 4x4 5.4L 6.5' Bed
-Bilstein 5100's All The Way Around, Front set at 2" lift
-Gryphon, custom tuned by Bill at PHP
-AirAid CAI
-Flowmaster 3" Cat-Back with 50-series (thinking of changing to a 40-series or a Magnaflow)
-Wig-Wag Headlights and Tail Lights
-Line-X
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Can you over cool your transmission?
I don't want to fix one problem, but create another.
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