Very weird, what do you think?
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Senior User
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Very weird, what do you think?
I finally got my new clutch through the 500 mile break-in period, so Saturday some friends were going muddin. I got into it a bit, and now my oil temp is a little lower than my coolant temp. Still within 15 degrees at 65mph. But if I stop at a light oil drops to about 180 while coolant stays at 190 - 195. Never once went more than 15 though. My question is has anyone ever seen anything like this? And is that bad for the motor?
Elder User
Joined: Dec 2010
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From: LA = Lower Alabama
I see it all the time, but I have an air cooled oil cooler. Bad for the engine? No... Weird? Yes.
Check your starting temps after a long cold soak and see if the oil and coolant temps are close, real close.
Possible bad sensor. I don't see how your oil temps could ever be lower in the OEM cooler unless the oil isn't up to temp yet. Just seems to go against some law of nature...
Check your starting temps after a long cold soak and see if the oil and coolant temps are close, real close.
Possible bad sensor. I don't see how your oil temps could ever be lower in the OEM cooler unless the oil isn't up to temp yet. Just seems to go against some law of nature...
Hotshot
Joined: Apr 2010
Posts: 19,061
Likes: 238
From: Saratoga Springs,UT
WOW so your oil is cooling the coolant
Iv seen this before but the coolant temp was ALOT hotter and was bad headgaskets
I dont think you have a bad headgasket
maybe a bad thermistate IDK
is there a bunch of Mud in the moter compartment
Iv seen this before but the coolant temp was ALOT hotter and was bad headgaskets
I dont think you have a bad headgasket
maybe a bad thermistate IDK
is there a bunch of Mud in the moter compartment
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That's what I thought. Today I had to drive about 72 miles round trip. Before the way back after the truck sat for a few hours. I started it and both temps were within 3 degrees of each other. Let it idle for a min before taking off like I always do then took off. Both temps climbed like normal while driving. Bit its like the oil hit its cap.
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No, I always spray everything off and let it dry for a few hours before I even think of starting it. I'm not using or Puking any coolant, and I have studs. Is it possible to un-clog an oil cooler by pushing the truck? I was even careful to watch the temps while in the mud. Never let it get past what I get on the highway.
Fleet Owner
Joined: Nov 2003
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My oil temp lags all the way up to 180 or so, then it slowly climbs above the coolant temp.
The temp readings don't really mean much until everything is heat saturated.
What are you reading temperatures with? If it is a scangauge, are you sure the EOT PID is programmed properly?
If that isn't it, then I would suspect a bad sensor.
The temp readings don't really mean much until everything is heat saturated.
What are you reading temperatures with? If it is a scangauge, are you sure the EOT PID is programmed properly?
If that isn't it, then I would suspect a bad sensor.
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It's reading off of my edge evolution programmer. But now my readings are dead on, no delta. Maybe 1 or 2 off on acceleration.
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