Her Spread
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Elder User
Joined: Oct 2006
Posts: 630
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From: Land of Lincoln
Her Spread
After driving for over an hour with the cruise on 65 her spread seemed kind of wide to me for a new oil cooler. New oil cooler & EGR delete few weeks ago. My old cooler was giving me a 9 or 10 spread. I flushed her guts 10K ago & been running a filter on it since that time. Data was taken on flat land & unloaded. What kind of spread are u guys seeing on a brand new cooler??
Hotshot
Joined: Jul 2005
Posts: 13,834
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From: Middle Tn.
Hey Ed, I don't see a problem. Every one seems to be grabbing for the 3 to 4 degree brass ring spread. You are well into acceptable territory. I too run between 6 and 10 depending on ambient. Just consider this your reference running temp. for whatever the ambient is there and enjoy your ride. Some people put so much stress on them selves looking for a 1 or 2 degree deviation that they should sell the truck to save their health. Just kick back and enjoy her.
Posting Guru
Joined: Jan 2009
Posts: 1,321
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From: Mattawa Washington.
Hey Ed, I don't see a problem. Every one seems to be grabbing for the 3 to 4 degree brass ring spread. You are well into acceptable territory. I too run between 6 and 10 depending on ambient. Just consider this your reference running temp. for whatever the ambient is there and enjoy your ride. Some people put so much stress on them selves looking for a 1 or 2 degree deviation that they should sell the truck to save their health. Just kick back and enjoy her.
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Elder User
Joined: Oct 2006
Posts: 630
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From: Land of Lincoln
Thanks for the re insuring info Mike & Doug! Ambient was about 50F. I just remember reading so many 2-3 & 4-5's I was like WTF is going on here. I guess the old cooler wasn't plugged at all if I only gained 1-2 degrees with the new cooler. Again, thank you!
Senior User
Joined: May 2004
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Mine has been 7-9* on average since my oil/EGR cooler change as well. I think everyone expects the sensors in the truck to be 100% accurate, and I don't believe that's the case. If your sensors had a margin of error of +/- 2* that could make up the difference between a 5* delta and 9* delta. There's probably other forces at work which could fudge the numbers by a degree or two as well. I'd be interested to know what the actual tolerances are on the sensors.
I installed a BPD EGR cooler, so that gives me some piece of mind if the number do start to creep. You deleted yours, so I'd imagine you're in better shape.
I installed a BPD EGR cooler, so that gives me some piece of mind if the number do start to creep. You deleted yours, so I'd imagine you're in better shape.
Posting Guru
Joined: Jan 2009
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On mine 60mph is 7*, 65mph is 8*, and 70mph is 9*. I thought it was a little much for a new cooler to, but apparently not. I worry about putting my trailer behind the truck and climbing the pass, will i see the dreaded 15* mark??????
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From: Mattawa Washington.
https://www.ford-trucks.com/forums/9...-pressure.html
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More Turbo
Joined: Jun 2007
Posts: 537
Likes: 3
From: Carvel, AB, Canada
Mine has been running 7-9 degree spread for a long time. I've flushed, I've filtered and on and on..... The spread really never changes. If anything I would say it actually decreases when I tow heavy loads.
Hotshot
Joined: Apr 2010
Posts: 19,072
Likes: 242
From: Saratoga Springs,UT
Keep in mind some aint taking the temps right
others may have a Bad Temp sensor thrown into the mix
when I drive at the same conditions as you Im a 6-8* spread and it favors 8* I only have 15K on this oil cooler
in the city I get an average of 2-4* spread
Now that right there is Funney
Cargo Master
Joined: Oct 2011
Posts: 2,958
Likes: 4
From: Denver, NC
Your NOT alone....Thats why i clicked it......So Bad 
P.S...To the OP looks like ur #'s are good to me, dont sweat it
P.S...To the OP looks like ur #'s are good to me, dont sweat it