6.0 oil cooler in my 1999 F350 dually
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6.0 oil cooler in my 1999 F350 dually
I’ve been planning this upgrade for a while now. Installed a ford 6.0 transmission oil cooler in our F350 gas engine truck. This is a popular upgrade on F350s with a 7.3 diesel or a 6.8 gas engine. As you can see in one picture the new cooler is roughly twice the surface area of the old cooler and it is a bolt in modification. Hopefully this will solve our cooling issues when towing on hot days.
Also got to use my Sidewinder ratchet! It’s a lifesaver in tight quarters.
Also got to use my Sidewinder ratchet! It’s a lifesaver in tight quarters.
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I used the Dorman 918-216 aftermarket version in our Ex and it works great.
The 6.0 cooler uses 1/2" diameter tubing (OEM is 3/8") which reduces the cooler line pressure.
The lower line pressure allows use of a 3rd cooler and a filter, if desired, without exceeding the OEM line pressure and possibly opening the cooler line bypass valve.
The 6.0 cooler uses 1/2" diameter tubing (OEM is 3/8") which reduces the cooler line pressure.
The lower line pressure allows use of a 3rd cooler and a filter, if desired, without exceeding the OEM line pressure and possibly opening the cooler line bypass valve.
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Update: Climbed from zero to 5200' altitude towing a 31' 5th wheel trailer today. Max transmission temperature hit 210 and held there. It took quite a while at 4000rpm, 45mph in 2nd gear to climb from 160 to 210. The hardest part of the climb was maybe a 10 mile climb. The outside air temperature at the top of the pass was about 55 degrees, so I'll need to pull over and let the trans temp cool down on a hot day. Normal temperature on flatland is now 160 degrees. 210 degrees is hotter then I had hoped for, but of course it is a big improvement over the stock transmission oil cooler that was not running through the radiator.
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It's ports are 1/2" NPT so I use an adapter fitting that takes it to 1/2" hose.
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recommends against stacked coolers. Being he helped Engineer the 4R100 I tend to follow his advice.
@billybobofkf do you have the newer radiator with the transmission fluid running through it?
I found my temps drop quicker after adding the OTW cooler and removing the extra tube and fin. I however am not towing heavy like you are though.
@billybobofkf do you have the newer radiator with the transmission fluid running through it?
I found my temps drop quicker after adding the OTW cooler and removing the extra tube and fin. I however am not towing heavy like you are though.
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recommends against stacked coolers. Being he helped Engineer the 4R100 I tend to follow his advice.
@billybobofkf do you have the newer radiator with the transmission fluid running through it?
I found my temps drop quicker after adding the OTW cooler and removing the extra tube and fin. I however am not towing heavy like you are though.
@billybobofkf do you have the newer radiator with the transmission fluid running through it?
I found my temps drop quicker after adding the OTW cooler and removing the extra tube and fin. I however am not towing heavy like you are though.
Also, I realized that I forgot to take my front license plate off. It is halfway blocking the hole where airflow runs through. If I take the license plate off, I'll have better airflow through the trans oil cooler, maybe up to twice the airflow,
I'm now considering building a little fan setup to set in that hole to speed up cool down if I have to pull over climbing a mountain.
We have another trip planned in July that will take us over two mountain passes, so there will be plenty of time to rethink this issue.
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Mark Kovalsky doesn't recommend running multiple oil coolers in series due to the possibility of activating the low pressure bypass. I understand that you are running two coolers successfully, but I don't believe that I'm up for trying it.