Engine Oil Cooler Issues...again
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Mountain Pass
Joined: Mar 2012
Posts: 114
Likes: 2
From: Saint Marks
Engine Oil Cooler Issues...again
Recently I changed my 2006 6.0 oil cooler at 144k due to a large variance between coolant temp, and engine oil temp. Prior to doing that, I did a coolant flush, and added coolant filter. Well Only 6k miles later, I started having the same issue and replaced the thermostat and also did a reverse coolant flush to try and clean out the oil cooler, and another full coolant flush as well as replace the coolant filter again. I am now once again getting those high oil temp numbers over the coolant temp. Yesterday pulling my tractor I had 200ish engine coolant, and 238 engine oil temp. Is there somewhere else I should be looking. I was told the an external oil cooler would be a solution. Any help would be appreciated.
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Mountain Pass
Joined: Mar 2012
Posts: 114
Likes: 2
From: Saint Marks
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Mountain Pass
Joined: Mar 2012
Posts: 114
Likes: 2
From: Saint Marks
What about BulletProof External oil cooler? They have one that eliminates the factory filter as well, and I heard the plastic parts in those can break too.
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Fleet Owner
Joined: Mar 2003
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From: Blue Hill Township
Looks like it is time for an oil cooler again.
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Mountain Pass
Joined: Mar 2012
Posts: 114
Likes: 2
From: Saint Marks
It is usually about the same when I start up. Will need to verify when I go home as I drove one of my Broncos today. When not towing, the difference is usually gets to about 10 degrees between the two. When towing heavy, and not even pushing it 45-55 mph, it can be greater than 40 degree difference, and eventually will throw the wrench at me and the code. Comes down pretty quick at idle though
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Mountain Pass
Joined: Mar 2012
Posts: 114
Likes: 2
From: Saint Marks
Is there anything else that can cause this that I can search for?
Fleet Owner
Joined: Mar 2003
Posts: 24,724
Likes: 74
From: Blue Hill Township
Is your cooling fan working normally?
Radiator isn't blocked?
It sounds like the BPD system might be a good idea in your case. I've never been a big fan of that system as the factory one typically works just fine provided the cooling system is clean. Plugging up an oil cooler in 6k miles is definitely not a good thing.
Are you doing the work yourself?
If it were my truck, I would probably flush the cooling system again and then put another OEM oil cooler in it. That BPD set up is quite spendy.