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OIl TEMP ON THE RISE

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Old 12-16-2013, 07:46 AM
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OIl TEMP ON THE RISE

I have a 08 F350 SD with 110,000 miles. I change the motor oil between 3000 & 3500 miles. I'm running KEM tunes with a K&S tuner. Driving yesterday I noticed the oil temp slightly unstable and ranging from 203 - 213 deg. For the past several years this truck never went over 203 deg. Is this a sign the oil cooler is going bad? and if so what's involved in replacing the cooler. Thanks in advance.
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Old 12-16-2013, 03:13 PM
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At the same time...what is your water temps? Perhaps it is the thermostats.
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Old 12-16-2013, 04:35 PM
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I don't monitor my water temp in the h&s, but the guage sits just under 12:00 - it's the best I can come up with
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Old 12-16-2013, 04:37 PM
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monitor the delta for water and oil and then report back.
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Old 12-16-2013, 05:59 PM
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I will work on it - thanks
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Old 12-16-2013, 09:05 PM
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Are you running a coolant filer?

When was you last flush?

Oil cooler could be clogging or just has some nasties you need to flush out.
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Old 12-17-2013, 05:59 PM
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This is what I saw -
water: oil:
194 205
204 209
197 207
192 201
195 201
192 207
still noticed that the oil temp is a lot more unstable than usual
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Old 12-17-2013, 06:03 PM
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your delta seems ok.

I suggest a coolant flush. When was the last one completed? Have the nitrites ever been tested?
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Old 12-17-2013, 06:04 PM
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no, I'm not running any coolant cooler - can you flush the oil filter? I'm real religious on changing the oil and use Kendall 20w50 and have on all my trucks from my 87, 93, 02, 06, 08 Fords & 1-Dodge (thought I would try one out) and 3 medium duty International Trucks DT466
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Old 12-17-2013, 06:08 PM
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I've never have done a flush on the coolant system and have not run any tests either.
how does the coolant flush effect the oil temp. I understand you keep the engine cool will keep all fluids cool but I thought there is a oil cooler? am I incorrect in my thinking?
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Old 12-17-2013, 06:11 PM
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There is an oil cooler in the valley of the motor. Coolant runs through it.

Checking the chemical make up of the coolant helps with corrosion protection as well. Since you have just over 100K it is over due.
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Old 12-17-2013, 06:22 PM
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You ran 20w50 in your 06? Was it a 6.0?
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Old 12-17-2013, 06:36 PM
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so I'll check the properties of the coolant - is there possible damage already to the oil cooler - or will the flush clean it up?
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Old 12-17-2013, 06:38 PM
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yes it was a 2006 w/ the 06 engine sold it with 76000 miles - sold it - hauled the trailers great - sucked in the sand - fell for the 08 and haven't look back since - great truck. has a minor issue here and there but don't they all.
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Old 12-17-2013, 06:39 PM
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I am thinking just do the flush. Your delta's are still fine.

I don't think any long term damage at this time.
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