IMO yes^^^^

If it was me I wouldnt waiste the money on ELC untill the Oil Cooler is changed and just drive it for now maybe test the coolant make shure its ok for PH or whatever they call it you dont want to have a cavitation issue


Or atleast see if you can get the Deltas to come closer together then go for the ELC





Well some have brought the deltas closer together with chemicals and Reverse Flush right at the Oil Cooler IMO you have a 50/50 shot here

You say that you had 55k on the original oil cooler so the junk thats in there is probably packed in there Good


Maybe you already read this thread IDK but if not its got some good Ideas on the oil cooler backflush

SOME GREAT IDEAS ON OIL COOLER BACKFLUSH
https://www.ford-trucks.com/forums/1...ch-advice.html


you might try to backflush but to me there comes a point when your Better Off to cut your Losses and just Replace the Oil Cooler

I would Try a few simple backflushes of the oil cooler

And if that dont work I would Draw the LINE I wouldnt go as far as some Folks in that thread that are Building Pumps and stuff like that to reverse flush I would just change the Oil Cooler at that point

 

No, but I am willing if you can explain to me what you are talking about - is it to check first that I am getting accurate readings from the temp sensors?

Could I also get some more opinions on how much flush is necessary - Restore, Restore+, vc-9. I can order vc-9 from Tousley, but I think restore/restore + may be a long drive away

 

I dont think so Bud

And would be an Excellent Idea

 

I ordered the Restore from Truck Parts for Semi,Trailer Parts,Heavy Duty Truck Parts, Ryder Fleet Products

I got two gallons and don't need the second, are you by chance anywhere near Memphis?

Restore+ and VC-9 do the same thing. Restore+ is cheaper.

I bought myself some time from a badly clogged oil cooler by backflushing but it's still in need of changing. It seems to me that if you're okay now but the chemical flushes clog it, you are a pretty good candidate for a backflush working. Of course that is putting you then in a position where you may need to do the oil cooler very soon, a risk. But yes, I think it is inevitable if you're already borderline. Of course do check your temps when the engine has sat for a day, make sure your readings are close together, so you eliminate a bad sensor giving you a false reading.

 

Blade - Thanks for the advice - I have read that thread about backflushing. I wasn't going to try that. I barely works with my pool filter and you are supposed to backflush those. I'd rather just fix it properly. It gives me an opportunity to do a few other things that have been on the list for a while. What's the cold soak thing?

 

Let the truck sit for 12hours and check the Temp ECT and EOT right at startup they need to be the same or Really close

If early in am they will be close to ambeint temp

 

Thanks for the tip and explanation on the Restore/Restore +. Restore + comes as a gallon and VC-9 is a quart. Are they different strengths? You don't need the whole gallon.

I'm in FL, but thanks

My cold readings first thing in the morning are always spot on the same (unfortunately). Usually almost exactly the outside temp as well. Tell you the truth, my numbers have been steady for 3 yrs - delta went up a bit after the headgasket issue. Believe it or not, Ford diesel tech refused to change my oil cooler then even though I was paying. He did change the EGR cooler though.

 

No Kidden

If I was a Tech I would change your rearveiw Mirror even if it was perfictly Good Id still throw A new one On if the customer asked LOL

 

this is a good example of why you can't even trust the dealership most places. There are OF COURSE exceptions, some of them are members here and I don't mean to cast aspersions on any of them! I'm simply saying that "experience" don't mean squat unless it's 6.0L experience. Remember, the reason for the big lawsuit fiasco between Ford and International is primarily because Ford used a different coolant from International.
Learn how from these forums and do your own work. I don't think I'd trust them to change my oil. Anybody changing an EGR cooler and not the oil cooler has got to be suspected as incompetent on this engine.

 

This quote should be a sticky at the top of the 6.0L forum.

 

I don't really want to bring up a bunch of bad memories, but I share the story:

I was blowing white smoke and there was some questionable coolant loss. It was 2009 and I was still under warranty. I took it to the Ford dealer and asked if it would be covered by the warranty, since I had some aftermarket stuff and tuning. They said they would need to look at it. What they then did was take the heads off to "diagnose" head gasket failure and then they decided it was not covered. They also said I needed a new EGR cooler. I started reading - I asked about the oil cooler and showed them the TSB on it. The oil cooler tested fine so they insisted on leaving it alone. I am not sure what was wrong with the EGR cooler, because the truck was running fine, with normal deltas. I wanted to leave Ford once it wasn't going to be covered, but at that point my heads were off. I asked to have them machined - no need - they are "perfect" I asked for studs - I ordered them and they agreed to install those, but said it would violate the warranty (which they were not honoring anyway). Anyway HGs were fixed and the smoke continued - it was a turbo seal. What a great trip to the dealer. I haven't been back. Crazy stuff

 

I think I might loose my temper. That is a serious bummer. Miss diagnosis is only to common with the 6.0L.

It really sucks when I have to explain what I want done and why, to the FORD Tech.
I always speak to the tech. when I have work done. I have had to drive away due to lack of knowledge on the tech. part.

 

Alright, so I know I may be pushing my luck, but I think I am going to chemically flush the system and then deal with the consequences. I have found CAT ELC locally and it is very reasonable (11.50/gal concentrate). The CAT dealer also sells a cooling system "quick flush" which they say is CAT's recommended cleaner before ELC and it does a restore and restore+ type flush in one 90min run through the system. Any thoughts on the CAT cleaner? I've decided if I need a new oil cooler, I'd rather just get it over with now.

 

Just remember, flush first, then change EOC! Otherwise, just plugging the new one!

 

Yeah, I am going to flush first. I think it might do my oil cooler in, since it is kinda borderline already, so I am getting ready just in case.