6.0 performance parameters - do I need work done?
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6.0 performance parameters - do I need work done?
I purchased a 2006 e350 with 145,000 miles. A mechanic pre-purchase inspection said healthy engine. Invoice shows work done in 2013 to the tune of $5000US but did not list the items replaced. Heads studs where replaced (visible), and apparently a new oil cooler, EGR delete, dummy plugs, and fuel tubes? It was done by a H&H Diesel Performance whose phone seems to be out of service, so no way to talk to mechanic.
I just drove Flagstaaf to Dallas and the engine sounded and ran great. I was able to drive long stretches to test oil cooling at speed over a half hour test period for each speed and recorded the following:
Mph EOT ECT
75 201 191
70 197 188
65 195 188
60 195 186
60 208 198 On a 1/2 hour uphill grade
FICM 48.5-49
From what I have researched, this looks within specs, but just talked to a certified bulletproof diesel shop (through bulletproofdiesel.com) and they say EOT-ECT should be within 7-8 degrees of each other. Also said if fan clutch is running all the time that is a problem, but did not notice if fan clutch was running a lot.
Any comments here on if I should put in a new oil cooler? Seems good to me as is.
I just drove Flagstaaf to Dallas and the engine sounded and ran great. I was able to drive long stretches to test oil cooling at speed over a half hour test period for each speed and recorded the following:
Mph EOT ECT
75 201 191
70 197 188
65 195 188
60 195 186
60 208 198 On a 1/2 hour uphill grade
FICM 48.5-49
From what I have researched, this looks within specs, but just talked to a certified bulletproof diesel shop (through bulletproofdiesel.com) and they say EOT-ECT should be within 7-8 degrees of each other. Also said if fan clutch is running all the time that is a problem, but did not notice if fan clutch was running a lot.
Any comments here on if I should put in a new oil cooler? Seems good to me as is.
Last edited by Belize; Jan 27, 2020 at 11:01 AM. Reason: Clean up table
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using scangauge. Yes, truck was at operating temps for all readings. Ran van at those speeds for at leadt half hour before readings. Readings wete stable.
Mountain Pass
Joined: Oct 2012
Posts: 233
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From: Southern Indiana
Thanks for that pic @6point0 , I snagged it for future reference
Hello, @Belize , missed that it is a van -- your low coolant temps are gonna make the deltas seem off
are you running the heater a lot in these tests? The heater can pull the temps down
otherwise the t-stat sets the base temperature for the engine -- may need replacing
the engine coolant should be around 192F
Hello, @Belize , missed that it is a van -- your low coolant temps are gonna make the deltas seem off
are you running the heater a lot in these tests? The heater can pull the temps down
otherwise the t-stat sets the base temperature for the engine -- may need replacing
the engine coolant should be around 192F
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