I did so those. Sorry didn't mean to ignore your question earlier. I'm just going to just a hose like some one else suggested. Got so much coming up and needed to get done what I can when I can.

Good idea pulling the tstat. I'll do that too.

Draining my first batch of tap water to clear out some old coolant. Will be using restore next and going for a drive.

This was my throttle control while running tap water through it lol

 

Well, that entire process actually made my situation worse. 10 hours of work on this thing yesterday. On the interstate truck runs 190-192 and the EOG was 218-223.

Even getting off the interstate its not collijg off fast at all. Couple miles down the back road and I'm still at 190, 212.

What next?

 

Oil cooler replacement or a BPD kit. Or getting really serious about trying to clean the oil cooler in-frame. Sounds like something came loose and got sucked into the oil cooler, that's the risk of doing the chemical flush.

What I mean about getting serious it is putting a chemical mix directly into the oil cooler, like this guy:
https://www.ford-trucks.com/forums/1...il-cooler.html

I've thought about trying mix restore and boiling water and pour directly into the oil cooler port, then backflushing it through a removed water pump. The logic to me is that this way the water pump isn't pushing all the junk from the whole engine through the oil cooler while it's running, it's trying to just loosen junk in the oil cooler and push it out. Long term things may break lose in the rest of the engine again, but short term you don't have to replace the oil cooler. His way in that link is just a little bit more intense on the chemical side than what I'd be willing to do. But it worked for him It's only crazy if it doesn't work.

 

Were you able to do this?

 

I hear ya.

After I drained my chemical out, I immediately did a back flush through the cooler with hot water with the DS block plug out for about 20 minutes.

I've got a new temp sensor that I'll install tomorrow. I don't think that's it but it's worth a shot.

 

I collected what went in the bucket. But, as you know, that stuff kind of goes everywhere. I saw some trash in there, but nothing that really alarmed me. The whole process yielded a fair amount of debris (term used loosely).

 

As long as there was no real rust, I would take that as a reason to NOT change the approach (ie don't use the Restore plus / VC-9), Maybe just try another backflush. I collect and re-use my coolant (as long as you know you have the concentration correct), but I do filter it before putting it back in.

 

This issue has dominated my thinking today. Help me think through it.... In talking with my diesel mechanic buddy (he and I did my cooler last July) and he said my cooler didn't appear to be clogged up from what he could tell when we pulled it out (I guess compared to others he's replaced). I didn't pull any loads from July until early October. On that October trip I was watching my Torque app and the truck was getting warmer than I thought it should have. Told him the numbers and he wasn't overly concerned. I don't recall what they where ATM. Fast forward to now and I've not really monitored temps since I haven't been pulling anything any distance this winter. In my thinking, I believe I have a blockage some where else that's been plaguing me. Is that a known issue? If so, where's the likely spot? I also think I have a non factory radiator. I don't have the 19MM bolt head for the petcock valve, I have a wing nut looking piece of black plastic. Wonder if that radiator is an issue too in some way? Watching my temps today, the coolant was running about 2 deg on average hotter than before my flush driving in similar conditions with no load. Seems like I've got something else partially clogged somewhere.

In short, I need to find some sort of pathway to a solution. I'm up against some time frames of about a month before something needs to happen. That's either this truck is "fixed" or I've got a different truck (that's what my wife wants to do). I'm beyond grateful for your guys help, so please continue to throw ideas at me. I believe I may try that option that Dick did in that thread linked above. That's something I can "easily" do myself.

 

Any Updates? I think I am in the same situation, and will be trying a flush as an attempt to get my temps back into spec as I too had a new oil cooler installed but no flush at the time. So I would be curious to hear if you found a solution yet. Thanks and good luck!

 

Unfortunately my solution was to sell the truck. Loved the truck but I didn't have the time to continually work on it. I hope you are able to correct your temps using some info I've shared. Tons of good info in here. I was going to try the method of dumping the chemical right into the cooler as one of the links shared described.

 

Oh wow..I'll keep my fingers crossed.

 

So with the help of a mechanic friend that works on power strokes, he did a flush of my oil cooler (Which is new as of December) and was able to clear it out. Once that was done, my deltas went back to spec. I will probably do the chemical flush soon to be safe. Glad to be back in spec though, was getting worried. It is amazing the little amount of debris that can clog or restrict an oil cooler. I thought I would see chunks or stuff, but it was more like sand and pieces a little bigger than sand. Regardless, it solve my problem for now, I will keep monitoring until I can do the major flush.