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Old 03-06-2012, 06:18 PM
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Procedure for finding temp delta?

From what I understand it is warm truck up to normal operating temps, then cruise approx 65 mph and 190 ect then what??? my EOT just keeps climbing all the way up to 220 on my way to work (40 miles) But once it gets there it holds steady. This cannot be good right?!?!

Last edited by dpmac83; 03-06-2012 at 06:21 PM.
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Old 03-06-2012, 06:28 PM
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i dont think it is. from my understanding 10-15 is acceptable. looks like you are a candidate for a new oil cooler.
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Old 03-06-2012, 06:31 PM
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It was replaced about 4 months ago when i did the egr delete studs and gaskets, Well it better have been. What are these high oil temps going to hurt if left alone??
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Old 03-06-2012, 06:43 PM
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did you replace the colant and add a filter at the same time. im no tech, and my oil has never been over 205, but im thinking boiling your oil everyday cant be a good thing.

bailey
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Old 03-06-2012, 06:52 PM
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Coolant was replaced but no coolant filter, Oil has been changed 2 or 3 times since then and it didnt look crazy or anything. Where is the oil cooler located on an 05 f250
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Old 03-06-2012, 07:12 PM
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So if i do need to replace the cooler who hs the best one without spending an arm and a leg?
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Old 03-06-2012, 07:22 PM
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The oil cooler is under the intake manifold, if it is plugged you will overheat your oil once the weather starts warming up, I don't remember the temp but the engine will go into a limp mode at a certain oil temp. It's been mentioned on here many times that new oil coolers can plug up after replacement because of coolant replacement. The best one I can afford is a factory one, off ebay preferably since they are even cheaper than Tousley.
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Old 03-06-2012, 07:42 PM
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ok i found it, it looks like a pain in the a**. Th guy that did it the first time has disappeared and therefore I cant take advantage of his 1 year warranty on parts and labor. Man that makes me mad! Any suggestions before I dive into this project??
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Old 03-06-2012, 08:21 PM
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First just so you know, I am really new to these engines too, I've just spent many hours reading as much as I can on this site. There is another thread going with excellent info on coolant, you should read that and decide if you want to switch to the ELC coolant, that is as good a time as any. Also you'll want to try and figure out if you are plugging up because the coolant is gelling or because of casting sand, if it's gelling, you will HAVE to do the chemical flushes and switch or else you'll be needing another oil cooler soon. Good luck. Coach
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Old 03-07-2012, 05:15 AM
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Quote:
Originally Posted by dpmac83 View Post
From what I understand it is warm truck up to normal operating temps, then cruise approx 65 mph and 190 ect then what??? my EOT just keeps climbing all the way up to 220 on my way to work (40 miles) But once it gets there it holds steady. This cannot be good right?!?!
Yea your cooler is gone man if you are getting oil temps up in the 220 range. For me I never wanted to have to deal with an oil cooler issue again so I deleted it and got a bullet proof diesel kit. Unfortunately it is expensive and if money is tight then you have to do what you have to do. If you are going to replace the oem oil cooler, add a coolant filter and switch to some ELC coolant. There are lots of threads on the coolant.

Also you can save A LOT of money by doing your own wrenching. These engines are great for not requiring any special tools and you can tear all the way down with just sockets and ratchets. Changing the oil cooler will take a solid day or more if you have never torn into your engine before (so do it on a weekend) but it is not that hard.
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