24* delta spread
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Senior User
Joined: Aug 2011
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From: NC
24* delta spread
While driving home today after keeping it running while I was at the gas station to pick up some stuff. Most of the time I was running about 190* ECT and around 201*EOT with a spread of about 11* delta, truck was unloaded and a few times sparatic stop and go. Once I finally got open road with limited stop/go running at 55 mph the rest of the way. Watched my spread go from 191* to 195* ECT to between 215* to 218* EOT with a spread around 24. Do these kinds of spread spread caution, I am planning on getting the coolent flushed/simple green/vc-9 then fresh coolent this weekend, would there be anything else I need to look at. I changed my oil at 41k, I have a 04 F350 SD 4x4 KR, when I fill up the tank I use Diesel Klen at every fill up.
Hotshot
Joined: Apr 2010
Posts: 19,054
Likes: 235
From: Saratoga Springs,UT
2004 7 year old oil cooler its probably caked in there pretty good
hope the flush helps it very well could make it worse IDK it does need flush even if you change oil cooler
Watch it close look inside the coolant bottle occ.. for oil
do you have the round egr cooler??? that may buy you some time
hope the flush helps it very well could make it worse IDK it does need flush even if you change oil cooler
Watch it close look inside the coolant bottle occ.. for oil
do you have the round egr cooler??? that may buy you some time
Posting Guru
Joined: May 2003
Posts: 1,990
Likes: 1
From: Middleburg, FL
The delta for caution used to be 20 degrees. So at 24, you're not in immediate danger. However, you do need to get it addressed fairly soon. Blade is correct in that the flush could make your situation worse vice better. However, it's better to flush before you change the cooler. If the flush works and brings the delta down, then you've bought yourself some time. However, I'd plan on an oil cooler change in the not too distant future.
Senior User
Joined: May 2007
Posts: 204
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From: U.P of Michigan
Now's the time to do a very thorough flush with Restore and Restore + or VC-9.
I had a 28 - 30* delta on mine then did a flush including back flushing the oil cooler and heater core. I injected Restore directly into the oil cooler with a turkey baster a few times and let it sit then back flush with copious amounts of very hot tap water each time.
After all was done delta dropped to 9* unloaded driving 65. Has since crept up a little to 13-14 and has leveled off there. This was my plan though, to buy some time and let the old oil cooler catch any more junk in the system rather than the new oil cooler. Also installed a Sinister coolant filter at the same time. I'm now confident that when I install my new oil cooler and egr delete that it won't plug up.
I had a 28 - 30* delta on mine then did a flush including back flushing the oil cooler and heater core. I injected Restore directly into the oil cooler with a turkey baster a few times and let it sit then back flush with copious amounts of very hot tap water each time.
After all was done delta dropped to 9* unloaded driving 65. Has since crept up a little to 13-14 and has leveled off there. This was my plan though, to buy some time and let the old oil cooler catch any more junk in the system rather than the new oil cooler. Also installed a Sinister coolant filter at the same time. I'm now confident that when I install my new oil cooler and egr delete that it won't plug up.
Hotshot
Joined: Jul 2005
Posts: 13,834
Likes: 25
From: Middle Tn.
Now's the time to do a very thorough flush with Restore and Restore + or VC-9.
I had a 28 - 30* delta on mine then did a flush including back flushing the oil cooler and heater core. I injected Restore directly into the oil cooler with a turkey baster a few times and let it sit then back flush with copious amounts of very hot tap water each time.
After all was done delta dropped to 9* unloaded driving 65. Has since crept up a little to 13-14 and has leveled off there. This was my plan though, to buy some time and let the old oil cooler catch any more junk in the system rather than the new oil cooler. Also installed a Sinister coolant filter at the same time. I'm now confident that when I install my new oil cooler and egr delete that it won't plug up.
I had a 28 - 30* delta on mine then did a flush including back flushing the oil cooler and heater core. I injected Restore directly into the oil cooler with a turkey baster a few times and let it sit then back flush with copious amounts of very hot tap water each time.
After all was done delta dropped to 9* unloaded driving 65. Has since crept up a little to 13-14 and has leveled off there. This was my plan though, to buy some time and let the old oil cooler catch any more junk in the system rather than the new oil cooler. Also installed a Sinister coolant filter at the same time. I'm now confident that when I install my new oil cooler and egr delete that it won't plug up.
Cargo Master
Joined: May 2006
Posts: 2,116
Likes: 6
From: Florida
am i understanding u correctly that if you delete the egr cooler, you lose the delta readings between oil temp and coolant temp?
Senior User
Joined: Apr 2009
Posts: 359
Likes: 0
+1 on this ? Your oil/ coolant temps should still relevant no? With no EGR cooler you'll still be able to tell by the delta if your coolers going south wouldn't you?
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Senior User
Joined: May 2007
Posts: 204
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From: U.P of Michigan
Absolutely correct, you still have ect/eot readings and delta is still relevant. I would never rely on the egr cooler for my indicator. I mean what are you going to do, wait until the egr fails to know if your oil cooler is plugged? Gauges are the indicator, must monitor delta and that doesn't change with an egr delete. The only thing that changes is that if the oil cooler is plugged it doesn't starve the egr cooler.
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Senior User
Joined: May 2007
Posts: 204
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From: U.P of Michigan
Let me further explain this: the delta is used to monitor the condition of your oil cooler. A high delta is an indicator that the oil cooler is plugged and not doing it's job to cool the oil. As a consequence of this we also have an egr cooler being starved for coolant and potentially failing. The main thing we are monitoring here by reading ect/eot temps is the condition of the oil cooler. Whether or not the egr cooler is in place or deleted doesn't change this. A delete just prevents an egr cooler failure.
More Turbo
Joined: Apr 2007
Posts: 695
Likes: 78
From: Almost Heaven
While driving home today after keeping it running while I was at the gas station to pick up some stuff. Most of the time I was running about 190* ECT and around 201*EOT with a spread of about 11* delta, truck was unloaded and a few times sparatic stop and go. Once I finally got open road with limited stop/go running at 55 mph the rest of the way. Watched my spread go from 191* to 195* ECT to between 215* to 218* EOT with a spread around 24. Do these kinds of spread spread caution, I am planning on getting the coolent flushed/simple green/vc-9 then fresh coolent this weekend, would there be anything else I need to look at. I changed my oil at 41k, I have a 04 F350 SD 4x4 KR, when I fill up the tank I use Diesel Klen at every fill up.
VC-9 Before and after; Worth the money - Ford Truck Enthusiasts Forums
Private message me yur email address if you decide to R&R the oil cooler yurself. I have some emails that will help with the teardown.
Hotshot
Joined: Apr 2010
Posts: 19,054
Likes: 235
From: Saratoga Springs,UT
I mean what are you going to do, wait until the egr fails to know if your oil cooler is plugged? Gauges are the indicator,
Agreed 100%
Just because you deleate the EGR cooler doesnt mean the Deltas dont apply you still need to watch those temps
ALL those 2 temps show is the condition of the oil cooler with or without a EGR Cooler Some people Dont Get It and they give misleading info
Due to the Location of the temp sensors the egr cooler has no affect on the Deltas
There is Nothing to fail if EGR Cooler is Gone the chance of hydrolock goes WAY Down Not the Messenger I would want
I also gained 1-2mpg since I did the egr deleate no more feeding back in Hot Spent Air my MAT is way down lots cooler. Cooler Air has more molicules to burn so you get Better Combustion thus better fuel milage
This is also why we have a Intercooler
Agreed 100%
Just because you deleate the EGR cooler doesnt mean the Deltas dont apply you still need to watch those temps
ALL those 2 temps show is the condition of the oil cooler with or without a EGR Cooler Some people Dont Get It and they give misleading info
Due to the Location of the temp sensors the egr cooler has no affect on the Deltas
There is Nothing to fail if EGR Cooler is Gone the chance of hydrolock goes WAY Down Not the Messenger I would want
I also gained 1-2mpg since I did the egr deleate no more feeding back in Hot Spent Air my MAT is way down lots cooler. Cooler Air has more molicules to burn so you get Better Combustion thus better fuel milage
This is also why we have a Intercooler
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