EOT and ECT differences

[70cuda]

Hey guys, just hooked up my dashhawk to my 05 6.0. On the way home tonight it was about 55 degrees out and I was on the highway (60ish mph). I was monitoring my EOT and ECT, obviously fluctuated a bit but there was about a 3 -10 degree diffence between the two with the EOT being higher throughout the drive - temps between about 175 - 195 degrees. Sound about right. I know the rule of thumb is 15 degrees difference and over and you might have some issues but is 10 degrees pretty normal at freeway speeds? Thanks

[Superduty123]

yes

[pizza pig]

Yup perfectly normal... me on the other hand am seeing 176* coolant temps and 206* oil temps on normal 65mph cruise control driving

[amdriven2liv]

I never see less than 190 cruising at 65,(it will drop lower if I lift my foot and coast a little it will drop to 185) normal degree day (60-90) Might want to look at the "T" stat. Your ECT seems a little low.

[70cuda]

Thanks guys, I thought I was fine but wanted to check. amdriven, I put 175 -195 but really the 175 is the low, low end of what I saw, more consistently in teh 180s range. I'll pay more careful attention this week while driving and report back.

[travisH3]

both of mine are always in the 180-190 range. i have never been in the 200's at all.

[amdriven2liv]

70cuda, when I first got my Scangauge, I was really watching the temps. Since I have had it a while, I'm now real comfortable with where it runs. Less concern now, now more enjoyment!


The coolant system on these motors are pretty darn good, if they are kept clean. Mine cools pretty quick. Coolant filter seems to be a must. Funny, people come here and ask what the noise they are hearing, a loud roar, it's the fan coming on. If I'm not pulling my trailer, the thing rarely comes on. When it does, you know it!

[70cuda]

Well today was coolant flush day for me, drove the truck on several good drives with just water in it as I was flushing. Temps seem to be more in the 190 range, a bit higher than I had thought. At one point the oil did creep up to 202. Any insight on this, would running just water cause warmer temps?

[PGreenSVT]

Originally Posted by 70cuda

Well today was coolant flush day for me, drove the truck on several good drives with just water in it as I was flushing. Temps seem to be more in the 190 range, a bit higher than I had thought. At one point the oil did creep up to 202. Any insight on this, would running just water cause warmer temps?

Most likely so. It seems like you are fine, just keep an eye on things.

[70cuda]

Finally got the CAT ELC in and coolant filter sorted out, further monitoring of the eot and ect and the temps are definately higher than I originally thought. It was only in the mid 60's here today and I took my trailer (26 foot travel trailer) in to get serviced. On the short 15 minute tow I saw E0T between about 205 - 210 and ECTs about 200 - 205, once the trailer was off both ranges dropped by about 10 degrees, these seem high to me considering the ambient temp, how much warmer can I expect it to get on a hot day in the summer? Are these temps too hot, what is the "too hot" point? As a side note I did tow the same trailer in very hot weather all summer, with the Ford Gold ELC, no coolant filter and without monitoring the temps on my Dashhawk and never had an overheating issue based on the factory gauge??? Your thoughts?