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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
So I had a guy here looking at doing some work on my dozer, got him to look at truck.
Hes a tractor mechanic and not familiar with the 7.3 but he says its oil not fuel in my overflow tank?
How could oil get into water/coolant? What kind of intercoolers on a 7.3?
Hes a tractor mechanic and not familiar with the 7.3 but he says its oil not fuel in my overflow tank?
How could oil get into water/coolant? What kind of intercoolers on a 7.3?
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
Don't suppose you know where I could find more info on that?
Post Fiend
Joined: Mar 2015
Posts: 5,277
Likes: 32
From: Blairsville, Pennsylvania
Parts and PDF instructions here:
Genuine Ford Oil Cooler Repair Kit with 2 Genuine Ford gaskets and 4 o-rings for the Ford 7.3 Diesel
Also this thread with pics: https://www.ford-trucks.com/forums/1...oooorings.html
Genuine Ford Oil Cooler Repair Kit with 2 Genuine Ford gaskets and 4 o-rings for the Ford 7.3 Diesel
Also this thread with pics: https://www.ford-trucks.com/forums/1...oooorings.html
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
Thanks Ill read what I can find on the subject.
Cant figure out how the oil got in the coolant however?
Looks like the orings are near the oil filter housing but how does that get near any coolant?
Cant figure out how the oil got in the coolant however?
Looks like the orings are near the oil filter housing but how does that get near any coolant?
Post Fiend
Joined: Mar 2015
Posts: 5,277
Likes: 32
From: Blairsville, Pennsylvania
In short, coolant and oil are separated but flow right next to each other, for the oil to get cooled by the coolant. Any leaks- most commonly the orings- can allow them to mix.
As I understand it, it doesn't take much oil to make a mess out of your coolant reservoir, which is a good thing. Allows you to catch and fix it before it does a lot of damage.
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
So you think o rings and not injector cups?
Wonder if theres some way to find out what it is for sure?
Wonder if theres some way to find out what it is for sure?
Posting Guru
Joined: Sep 2014
Posts: 2,404
Likes: 3
From: Asheville-where weird is
Chances are this is your problem: Oil cooler o-rings. Here is a video.
www.youtube.com/watch?v=ZhTSfPspm9Y
www.youtube.com/watch?v=ZhTSfPspm9Y
Posting Guru
Joined: Sep 2014
Posts: 2,404
Likes: 3
From: Asheville-where weird is
Post Fiend
Joined: Mar 2015
Posts: 5,277
Likes: 32
From: Blairsville, Pennsylvania
That's a better question for these other guys. Seems they are suggesting you do the oil cooler, which seems like the easiest and (most likely?) fix.
My comment was only about the solution your pic seems to show. FYI, hydraulic fluid and water has a similar look, but maybe a thicker consistency. Ask me how I know
Hopefully it is as simple as the oil cooler. Just be sure to read up on it and ask questions...and get the orings from a trusted supplier. Another user *might* have gotten out of spec orings, which caused some troubles for him.
Good luck
