Checked deltas today, is this to be expected? - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 07-05-2012, 01:27 PM Thread Starter
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Checked deltas today, is this to be expected?

About 2K miles ago, when I first purchased my truck, I went ahead and blocked off my EGR cooler and replaced my oil cooler with a factory Ford one. The system has been flushed and am running CAT ELC coolant. I put my new Scan Guage II on it today, and drove down the highway to check deltas. The ambiant temperature today is 102*F . Driving at 65mph on level road, my delta was at about 12* difference. I'm wondering if anyone else has seen this much of a delta after a new cooler? Could the sweltering hot day play a role?

SOLD--2003 F-250 RC/LB FX4, 6.0, 5R110, EGR cooler capped off at both ends, CAT EC-1, Rotella T6, Motorcraft fuel and oil filters, Amsoil in diffs/T-case, blue spring update, ScanGuage II, 5" Diamond Eye exhaust (not cat, no muffler ) 4" downpipe, Cooper Discoverer S/T's (LT265/75R16E).
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post #2 of 13 Old 07-05-2012, 01:32 PM
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what were the temps? under any load at all?

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post #3 of 13 Old 07-05-2012, 01:33 PM
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that spread is a little high if reaching that delta without a load? ,,

they should stabilize to within a few degrees if everything is copacetic ,

did u do a coolant filter ,, what is your Actual ECT/EOT ? you may just be over cooling the coolant due to a tstat issue

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post #4 of 13 Old 07-05-2012, 05:30 PM Thread Starter
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The truck had no load. The ECT was 195*, the EOT was 207*.

SOLD--2003 F-250 RC/LB FX4, 6.0, 5R110, EGR cooler capped off at both ends, CAT EC-1, Rotella T6, Motorcraft fuel and oil filters, Amsoil in diffs/T-case, blue spring update, ScanGuage II, 5" Diamond Eye exhaust (not cat, no muffler ) 4" downpipe, Cooper Discoverer S/T's (LT265/75R16E).
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post #5 of 13 Old 07-05-2012, 05:31 PM Thread Starter
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The truck has no coolant filter.

SOLD--2003 F-250 RC/LB FX4, 6.0, 5R110, EGR cooler capped off at both ends, CAT EC-1, Rotella T6, Motorcraft fuel and oil filters, Amsoil in diffs/T-case, blue spring update, ScanGuage II, 5" Diamond Eye exhaust (not cat, no muffler ) 4" downpipe, Cooper Discoverer S/T's (LT265/75R16E).
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post #6 of 13 Old 07-05-2012, 06:00 PM
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get a filter IMHO

and keep an eye open ,, your ECT might be a tad low for the ambient

mine tends to run about 200 at that temp

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post #7 of 13 Old 07-05-2012, 06:01 PM
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Was the flush done after the oil cooler was replaced?

Temps are within reason with the temps, a 12* delta is nothing huge to worry about.
I also agree with the coolant filter install.
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post #8 of 13 Old 07-06-2012, 06:01 PM Thread Starter
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A flush was done once before I bought the truck, and I did one after installing a new cooler.

SOLD--2003 F-250 RC/LB FX4, 6.0, 5R110, EGR cooler capped off at both ends, CAT EC-1, Rotella T6, Motorcraft fuel and oil filters, Amsoil in diffs/T-case, blue spring update, ScanGuage II, 5" Diamond Eye exhaust (not cat, no muffler ) 4" downpipe, Cooper Discoverer S/T's (LT265/75R16E).
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post #9 of 13 Old 07-06-2012, 10:00 PM
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flush probably clogged the new cooler a little
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post #10 of 13 Old 07-07-2012, 03:18 AM
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You may want to look at your radiator as well. The same stuff that clogs the oil cooler flows thru the radiator as well.


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