Oil Cooler... NEED ADVICE

[Paul04_619]

I have an 06 F350 SRW and my EOTs and ECTs are showing a 25 degree difference from time to time. I know what this means so i ordered a Sinister oil cooler and egr delete. My question is will it hurt for me to drive the truck for about a week, no hard pulling, or should i try and let it sit and wait it out?

[juzatheman]

just monitor your temps.

i did stop driving when eot rise over 230'F and my ect was 186'F so 44'f delta
was there.

i have noticed that after sinister egr delete my coolant temp wount rise over 188 normal driving. if not over 88'f weather

after egr delete when oil cooler start to glogg and it wount transfer the heat to coolant that good anymore my normal coolant temp drops when oil temp rise

i mean when my oil cooler is just flushed open normal operating temps what i have is ECT 192 and EOT 192-196 and when my oil cooler start to glogg slowly
ect drops and eot rise so normaly when i do the flush again eot has climb to 220-230 and ect has drop 186 or lower

and this temps are stedy light foot on gas.

if i push it ect rise quite fast to 192-195 but so does the eot but with bigger numbers...

[Paul04_619]

how often do you have to flush your oil cooler? what does this require? and do you have a coolant filter?

[juzatheman]

read this first.

6.0 coolant flush write-up

my cooler flush seems to be never ending story cause some previous owner has use only water in the coolant system and my block and heads are rusted badly inside. i do have a new oilcooler but it cloggs over and over again.
first i had to flush after i change the new cooler like after 100 miles then little longer and so on.. now i had best run about 1500 miles or something since last flush...


but i have allways manage to get the new cooler open again.

in my case what is the worst scenario ever the bullet proof oilcooler would be the best thing to do, but it is so expencive that it is on hold...

[Paul04_619]

well my truck has a completely clean OASIS report, and definitely has antifreeze in it, so hopefully i wont have that issue!

[Paul04_619]

If I flush my coolant before changing my oil cooler, doesnt it seem likely that trash will be washed out of my old oil cooler and be floating around waiting to clog my new one?

[juzatheman]

if i would have old glogged cooler i wouldt " back/reverse " flush it.

[NYC F-350]

nylyon has composed a paper on reverse flushing techniques.
"juzatheman" was certainly in inspiration and is given credit.

Check this LINK

[Donnie1]

Originally Posted by Paul04_619

If I flush my coolant before changing my oil cooler, doesnt it seem likely that trash will be washed out of my old oil cooler and be floating around waiting to clog my new one?

I was wondering the same and also thought if I do the cooler before the flush, won't stuff in the block and lines clog the new cooler?

[NYC F-350]

Originally Posted by Donnie1

I was wondering the same and also thought if I do the cooler before the flush, won't stuff in the block and lines clog the new cooler?

Flushing the cooling system previous to the installation of your new cooler is definitely recommended versus after you install it. Flush the system as best as possible to minimize the chances, keep a close eye on your delta right after and reverse flush it as outlined in that link I posted if needed, and you should be fine. As everything in life, there are no guarantees.