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There have been a few examples here that replaced a cold t-stat and saw their ECT EOT temp difference improve @ 65
Josh
I will replace the t-stat as soon as I get the chance (warmer weather). I found a good write up on here with pictures. I guess the next task will be searching the threads to determine which t-stat to use. I'm sure that will open a new can of worms.
I'll never understand why people take these things to the dealer. That's a $400 job in the real world...I could get head studs/gaskets installed for less than $2500...
Would you go to a grocery store that charged $40 for a gallon of milk?
It's not going to the dealer if it has to be done again. I have talked to a local independent shop that specializes in 6.0 Fords. But please remember, we are not all mechanics on this site. I can do simple stuff like shocks, coolant filter, bushings, etc., but for most of us this is a major repair. I use my truck to haul my family and I wouldn't trust the job I could do tearing most of the top of my engine down and putting it back together, not to mention the down time without my truck if something goes wrong. I don't mind spending the cash if a job is done properly that's why I drive an old truck that's paid for.
I can understand being nervous about doing your oil cooler yourself. Mine has been needing replaced for about 4 months and during that time I've read and watched everything I could find about doing the job, trying to decide if I wanted to do it myself or take it to the dealer. The local dealer here gives me a pretty good discount on labor but it was still gonna be about $475 for labor plus the cooler. I finally decided to do it myself and tore into it this past Sunday. I'm just waiting to get my intake manifold back from getting cleaned at a local machine shop and I'll be ready to put it all back together. I've got a thread going on it on here and honestly it's not been nearly as bad as I expected.
I can understand being nervous about doing your oil cooler yourself. Mine has been needing replaced for about 4 months and during that time I've read and watched everything I could find about doing the job, trying to decide if I wanted to do it myself or take it to the dealer. The local dealer here gives me a pretty good discount on labor but it was still gonna be about $475 for labor plus the cooler. I finally decided to do it myself and tore into it this past Sunday. I'm just waiting to get my intake manifold back from getting cleaned at a local machine shop and I'll be ready to put it all back together. I've got a thread going on it on here and honestly it's not been nearly as bad as I expected.
I get what you are saying. $2500 was the quote I got from the local shop but that was for flushing the system first properly, oil cooler, egr cooler, turbo service, new HPOP, and everything else that goes along with it. I've already had it done once 5 years and 60k ago that's why I'm hesitant that it needs it again and I'm probably going to hold out as long as possible.
But please remember, we are not all mechanics on this site. I can do simple stuff like shocks, coolant filter, bushings, etc., but for most of us this is a major repair.
I wouldn't change my oil cooler either. $400 is what it cost a good independent mechanic to do it. If you get quoted much more than that laugh and hang up the phone. The part is not expensive and it's only a few hours labor for somebody who knows what they are doing. Where ever you are at there is an independent mechanic who does this good and cheap, since they blow all the time. He's had a lot of practice...
There just isn't any reason to ever take a 6.0 to a dealer for any service what so ever. They aren't even experts in this engine.
The link you shared is a totally different situation from mine. That guy said his temp never got above about 188 when it was 95 degrees outside. Mine runs consistently around 200 when its warm outside. Right now its in the 20s with a 30 mph wind so I am not surprised it doesn't break 185. I think that's the way its always been. I'm not going to get excited about possibly improving the delta from 11 to 9. That is unless I start seeing some coolant loss then its too late anyway. As far as mileage, I already push 17mpg on the freeway. I think that's acceptable for a 4x4 dually with a 4.10 gear. However, I still plan to change the stat.
Have to use search somehow. I know my own temp spread improved 2 degrees in 2012 from the stock t-stat to the Motorcraft.
My current Mishimoto seems to be about the same as before.
Speaking of Mishimoto, I believe there are a couple examples in that thread where the temp difference lessened with the 200 t-stat
Josh
Mine did. Although no towing but my splits had gotten to 10 degrees and went back to 5 degrees with rhe mishimoto tstat but my split was due to tstat crapping out.
The link you shared is a totally different situation from mine. That guy said his temp never got above about 188 when it was 95 degrees outside. Mine runs consistently around 200 when its warm outside. Right now its in the 20s with a 30 mph wind so I am not surprised it doesn't break 185. I think that's the way its always been. I'm not going to get excited about possibly improving the delta from 11 to 9. That is unless I start seeing some coolant loss then its too late anyway. As far as mileage, I already push 17mpg on the freeway. I think that's acceptable for a 4x4 dually with a 4.10 gear. However, I still plan to change the stat.
ECT cold start 30 degrees, operating temp of 200 would be a Delta of 170. There is no "Delta" of 2 different subjects, i.e ECT compared to EOT. Whoever started with this Delta crap back in the day needs to be punched in the head. Josh
Well I can't argue with that. I use Delta V all the time as an accident reconstructionist. It's the difference pre impact velocity and post impact velocity but it's the difference in the same thing...velocity. However, if people wanna call the difference in EOT and ECT delta, I'm okay with that.