oil temp
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Junior User
Joined: Dec 2014
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oil temp
Well just had my 03 6.0L bulletproofed because I was told that my oil cooler and head gaskets were bad. I watched the guy install the whole thing start to finish. Before oil temp was about 230 and coolant was about 194, after kit my oil is still 230 and coolant 190/194. There were no problems found during install, pistons and heads were ok so I'm stumped. Mech said drive it and see how it does in a couple of days
Lead Driver
Joined: Jul 2004
Posts: 6,950
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From: Foothills, CA
Did the mechanic flush the cooling system thoroughly prior to doing the work? Or did he just leave all the crud in there to clog the brand new oil cooler... 
Because that has certainly happened to others... The oil cooler makes a most excellent coolant filter (by default), unfortunately...
Because that has certainly happened to others... The oil cooler makes a most excellent coolant filter (by default), unfortunately...
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Junior User
Joined: Dec 2014
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oil temp
Haven't Paid attention to Temps in morning but will after work. I flushed the coolant before I put fresh coolant in before the work was done. As soon as the work was done I drove home and that's when I noticed the oil temp climbing, this was about 5 min later so cooler shouldn't of been clogged that fast???
FTE Legend
Joined: Jul 2005
Posts: 65,938
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From: Millersville, MD
Do you have a ScanGauge or equivalent? You need to give us some numbers to see what is happening.....
NOTE to ALL 6.0 owners: Do yourselves a favor and buy a ScanGauge II or something to be able to monitor the 6.0's parameters! MUCH cheaper than replacing parts you may not need to replace.
NOTE to ALL 6.0 owners: Do yourselves a favor and buy a ScanGauge II or something to be able to monitor the 6.0's parameters! MUCH cheaper than replacing parts you may not need to replace.
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Junior User
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oil temp
Yes I have an SCT 4 tuner, that's how I monitor what the truck is doing, I also have a Torque App
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Logistics Pro
Joined: Dec 2004
Posts: 4,138
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From: South Weber, Utah
I would be interested to know how he tested the oil cooler bypass. I'm with Josh I think you should replace the oil filter base. Provided that the ECT and EOT sensors are good.
Posting Guru
Joined: Nov 2012
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How would one actually check if the bypass is passing too much? I have checked to see if they are there and unbroken but how do you know what flow is too much flow? I know of no values published for that other than a pressure differential. Then the question becomes how do you physically measure that differential?
Lead Driver
Joined: Dec 2006
Posts: 6,496
Likes: 94
From: So. Jersey
If the bypass is not working properly majority of the oil is never seeing the cooler and just getting dumped right back into circulation building higher temps.
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