Backflush Oil Cooler
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Elder User
Joined: Aug 2003
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From: Québec
Backflush Oil Cooler
Would it be possible to backflush the oil cooler through the Rad hose or through the Heat hose?
I am still having 25 spread and I am on the road, EOT is around 215 / 220, ECT 190 to 192. I would like to see if a quick backflush could save me some miles until I get back home.
Or maybe remove my T Stat so I can lower the oil temp until I get home?
I am still having 25 spread and I am on the road, EOT is around 215 / 220, ECT 190 to 192. I would like to see if a quick backflush could save me some miles until I get back home.
Or maybe remove my T Stat so I can lower the oil temp until I get home?
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Joined: Sep 2009
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Would it be possible to backflush the oil cooler through the Rad hose or through the Heat hose?
I am still having 25 spread and I am on the road, EOT is around 215 / 220, ECT 190 to 192. I would like to see if a quick backflush could save me some miles until I get back home.
Or maybe remove my T Stat so I can lower the oil temp until I get home?
I am still having 25 spread and I am on the road, EOT is around 215 / 220, ECT 190 to 192. I would like to see if a quick backflush could save me some miles until I get back home.
Or maybe remove my T Stat so I can lower the oil temp until I get home?
Yep, it's pretty easy too. Try an extremely hot water reverse flush, seems to have worked for some.
Hotshot
Joined: Aug 2006
Posts: 17,400
Likes: 319
From: Whittier, CA
Would it be possible to backflush the oil cooler through the Rad hose or through the Heat hose?
I am still having 25 spread and I am on the road, EOT is around 215 / 220, ECT 190 to 192. I would like to see if a quick backflush could save me some miles until I get back home.
Or maybe remove my T Stat so I can lower the oil temp until I get home?
I am still having 25 spread and I am on the road, EOT is around 215 / 220, ECT 190 to 192. I would like to see if a quick backflush could save me some miles until I get back home.
Or maybe remove my T Stat so I can lower the oil temp until I get home?
This would be my preference when on the road over trying some witches brew of backflushing, or even using VC9, which might simply end up plugging it worse.
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Elder User
Joined: Aug 2003
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From: Québec
Thanks, I do not mind the Cell. So unplugging my EGR should keep EGR cooler, colder since no exhaust goes through it. If it run cooler, it sould not blow up until I get home. I was reading on one post that the oil get dangerous at 255, so 220 should be OK.
You are right about the EOT, lots of people do not have gauges. If I would not have mine, I would not even know something is starting to go wrong.
You are right about the EOT, lots of people do not have gauges. If I would not have mine, I would not even know something is starting to go wrong.
I'm hitting easy street
Joined: Nov 2009
Posts: 6,395
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From: Central Oregon
Someone just recently put in a new Oil temp sensor and it dropped from 212 to 197. I just thought that was interesting. Didn't hear what the cost was. Might be something to try. Just thinking out loud here.
https://www.ford-trucks.com/forums/1...il-cooler.html
https://www.ford-trucks.com/forums/1...il-cooler.html
Junior User
Joined: Jun 2011
Posts: 97
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From: St. Martinville, La.
I have some pictures of my oil cooler cut into 4 pieces on my profile. I changed it while I was in there changing out my HPOP. Mine was actually surprisingly clean when I cut it open. Flushing it can't hurt I don't guess, but once you cut one of these open and see how it works you can see that it would be impossible to get a good flush. The flow thru this thing is not a straight thru linear flow like you would think of when you think of a radiator. It is a it is a tangled mess of labyrinths. Just my opinion now that I have cut mine open.
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Postmaster
Joined: Jul 2011
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From: Houston, TX
I'm not sure how far you are from home, or ETA to home, etc. But I don't think you have an emergency on your hands. There are plenty of people driving around clueless with similar temp spreads. I think I would unplug my EGR valve, so the exhaust gasses won't burn through the cooler. Your truck will throw a CEL, but it should run fine without EGR flow. Keep an eye on your oil temp and keep it below a safe number. I would say about 240° won't hurt anything. Slow down if you have to, or even stop and let it cool.
This would be my preference when on the road over trying some witches brew of backflushing, or even using VC9, which might simply end up plugging it worse.
This would be my preference when on the road over trying some witches brew of backflushing, or even using VC9, which might simply end up plugging it worse.
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Hotshot
Joined: Aug 2006
Posts: 17,400
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From: Whittier, CA
i wouldnt unplug the egr valve, bill, cos tat would create a new problem for the OP. when the egr valve is unplugged, it's not so much the CEL is on, but the radiator fan will not run and tat can cause higher temp probs. possible overheating, and might throw the six-o into limp mode.
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Elder User
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From: Québec
I am towing and I keep it slowly and easy. I do not think the fan will come on, ECT stays around 190 all the time, EOT went up to 222, that was when I was pushing it uphill. I am in Louisianna now and I can take highway 55 going up north, apparently this is a pretty flat highway.
Do you disconnect with engine running, key off engine off, or key on engine off?
If I am sure I will not cause another problem, I will try it. My biggest concern now with high EOT is if my EGR cooler bust before I get back home. I did not loose any coolant yet so my EGR must be good. When EGR is closed, no heat should go to the EGR cooler, so my EGR cooler should be good to home. I have read that oil can go as high as 255.
Do you disconnect with engine running, key off engine off, or key on engine off?
If I am sure I will not cause another problem, I will try it. My biggest concern now with high EOT is if my EGR cooler bust before I get back home. I did not loose any coolant yet so my EGR must be good. When EGR is closed, no heat should go to the EGR cooler, so my EGR cooler should be good to home. I have read that oil can go as high as 255.
Hotshot
Joined: Apr 2010
Posts: 19,072
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From: Saratoga Springs,UT
i wouldnt unplug the egr valve, bill, cos tat would create a new problem for the OP. when the egr valve is unplugged, it's not so much the CEL is on, but the radiator fan will not run and tat can cause higher temp probs. possible overheating, and might throw the six-o into limp mode.
Im with ya DOM
unplugging that egr valve gona cause other Problems
Its gona get heat soak in the egr cooler regaurdless
Heres the problems
Unplugged EGR VALVE & the problems that follow
https://www.ford-trucks.com/forums/9...egr-valve.html
heres a Great one for Oil Cooler Backflush Im with OP due to the oil cooler Ptrap design its going to be hard to flush once a coolant passage clogs solid its over but if you get it B4 it plugs might be OK
SOME GREAT IDEAS ON OIL COOLER BACKFLUSH
https://www.ford-trucks.com/forums/1...ch-advice.html
Hotshot
Joined: Jul 2005
Posts: 13,834
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From: Middle Tn.
I am towing and I keep it slowly and easy. I do not think the fan will come on, ECT stays around 190 all the time, EOT went up to 222, that was when I was pushing it uphill. I am in Louisianna now and I can take highway 55 going up north, apparently this is a pretty flat highway.
Do you disconnect with engine running, key off engine off, or key on engine off?
If I am sure I will not cause another problem, I will try it. My biggest concern now with high EOT is if my EGR cooler bust before I get back home. I did not loose any coolant yet so my EGR must be good. When EGR is closed, no heat should go to the EGR cooler, so my EGR cooler should be good to home. I have read that oil can go as high as 255.
Do you disconnect with engine running, key off engine off, or key on engine off?
If I am sure I will not cause another problem, I will try it. My biggest concern now with high EOT is if my EGR cooler bust before I get back home. I did not loose any coolant yet so my EGR must be good. When EGR is closed, no heat should go to the EGR cooler, so my EGR cooler should be good to home. I have read that oil can go as high as 255.
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From: knox Tn
That is an invalid reading. The spread must be taken when on flat ground when the system is fully heat saturated. If you are climbing, cresting or descending the delta means nothing unless it's so far out of line that you can be doing imminent damage. After doing any of the above mentioned you have to give the system time to stabilize.
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Elder User
Joined: Aug 2003
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From: Québec
Thanks Blade, I think i will push it until I get home, if i get to 230 i will stop. For now i will not unplug the EGR, i have read the post and it does funny things depending on the year you have.
Postmaster
Joined: Jul 2011
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From: Houston, TX
yeh guys. we're all here for the OP. hope he's alright. u guys have great points. i was jus tinking bout the flip side, and then my brain worked for once. i got more than cobwebs up in tat noggin. lol.
best of luck, kidoo. hope u make it home safe.
best of luck, kidoo. hope u make it home safe.