EOT kinda high
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Freshman User
Joined: Mar 2007
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EOT kinda high
Just received my scan gauge and the EOT peaks out at 230 when towing and the coolant stays between 180 and 195. I have the parts and had planned on doing the egr delete and replacing the oil cooler along with coolant filter next month. My question is can this wait a few weeks or does it need to be done now. Is 230 a dangerous temp for the oil to be at. If not what is a dangerous temp. My truck is a late model 04 with 156,000.
Fleet Owner
Joined: Nov 2003
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230 really isn't dangerous for the oil temp - especially if it is synthetic.
The real issue is that you are starving your EGR cooler from getting proper coolant flow (the coolant first goes through the oil cooler and then to the EGR cooler in series). Since the oil temp is more than 15 degrees above the coolant temp, your oil cooler is plugging up on the coolant side. Catch it early and you only buy an oil cooler rebuild kit. Wait too long, and you have an EGR cooler (and maybe worse) to deal with.
The real issue is that you are starving your EGR cooler from getting proper coolant flow (the coolant first goes through the oil cooler and then to the EGR cooler in series). Since the oil temp is more than 15 degrees above the coolant temp, your oil cooler is plugging up on the coolant side. Catch it early and you only buy an oil cooler rebuild kit. Wait too long, and you have an EGR cooler (and maybe worse) to deal with.
Hotshot
Joined: Jul 2005
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From: Middle Tn.
Mark, I may be wrong on this but if I got into it enough to replace the oil cooler then I would do the egr just because I'm there. No way to tell how much it has been stressed. Just my op, everyone has one. Mike
Fleet Owner
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Personally, I would probably install the bullet proof EGR cooler if I were at that point - just because I am conservative..
Hotshot
Joined: Aug 2006
Posts: 17,399
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From: Whittier, CA
Just received my scan gauge and the EOT peaks out at 230 when towing and the coolant stays between 180 and 195. I have the parts and had planned on doing the egr delete and replacing the oil cooler along with coolant filter next month. My question is can this wait a few weeks or does it need to be done now. Is 230 a dangerous temp for the oil to be at. If not what is a dangerous temp. My truck is a late model 04 with 156,000.
Regarding your question about waiting a few weeks, do you plan on towing much during those few weeks? If not, you would probably get away with waiting. The harder you work it, the worse your chances get.
I just got mine back yesterday from this same surgery. I had EOT of 248, but only on a long hard pull. I worked it into my schedule.
Fleet Owner
Joined: Nov 2003
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I personally would not want to drive it and take the chance of an EGR cooler failure and a possible hydrolock - but that is just me.
