Is my oil cooler leaking - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 8 (permalink) Old 07-09-2009, 10:18 PM Thread Starter
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Is my oil cooler leaking

I'm noticing my coolant level keeps dropping ever so slightly, I add then a few weeks later it has fallen.

I replaced the water pump (new) and hoses this past Jan.

I was at the Int'l dealer to get my up pipes and misc items for my donuts replacement, he asked for my engine serial number. So I look by the oil cooler/filter to get the number and I see this:

So is it leaking?

Billy T.
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post #2 of 8 (permalink) Old 07-09-2009, 11:19 PM
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Re: Is my oil cooler leaking

You need to pressure test the cooling system and look for leaks.

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post #3 of 8 (permalink) Old 07-09-2009, 11:20 PM
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Re: Is my oil cooler leaking

i guess im blind but i dont see whats leaking

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post #4 of 8 (permalink) Old 07-09-2009, 11:59 PM
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Re: Is my oil cooler leaking

Quote:
Originally Posted by countryboyrob View Post
i guess im blind but i dont see whats leaking
He is referring to the rust on the cooler caps.


I agree need to pressure the system and check for leaks.

Personally if your oil cooler was leaking that much you should be seeing your oil turn milky.

I bet if it is leaking anywhere its around the injectors

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post #5 of 8 (permalink) Old 07-10-2009, 12:49 AM
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Re: Is my oil cooler leaking

oh ok thanks for the info

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post #6 of 8 (permalink) Old 07-10-2009, 02:11 AM
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Re: Is my oil cooler leaking

It looks like you might have something going on there, I have replaced the ends of the oil cooler also because the antifreeze had eaten through the aluminum from the inside out. Do you have the coolant additive in your antifreeze?

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post #7 of 8 (permalink) Old 07-10-2009, 02:36 AM Thread Starter
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Re: Is my oil cooler leaking

Quote:
Originally Posted by BigStroker View Post
He is referring to the rust on the cooler caps.


I agree need to pressure the system and check for leaks.

Personally if your oil cooler was leaking that much you should be seeing your oil turn milky.

I bet if it is leaking anywhere its around the injectors
If the coolant is leaking externally, there will be no milkshake.

Quote:
Originally Posted by toolmangary View Post
It looks like you might have something going on there, I have replaced the ends of the oil cooler also because the antifreeze had eaten through the aluminum from the inside out. Do you have the coolant additive in your antifreeze?
Yes, have the DCA-4.

Probably the best thing to do is pressure test it.

Billy T.
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'97 Black F250HD SC 3.55s, Punisher trans, PI Converter, Dana 60 RSK w/ V & C SD springs,
PIS 175/80s, HB Jr, Comp910s, Smith Bros PRs, ARPs, Fluidampr, IC, E-Fuel, CJC Traction blocks, HFHV IDM, T4/BASB, 262K

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-2004 Mercury Marauder
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post #8 of 8 (permalink) Old 07-10-2009, 04:53 AM
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Re: Is my oil cooler leaking

I would pressure test it with the engine running next. Do you know if if always had the additive in it? The truck that I'm thinking about that I worked on ended up needing both oil cooler ends, a water pump and a heater core. I couldn't believe what the inside of the oil cooler ends and the water pump looked like, and the water pump was less than one year old. If you replace the oil cooler ends you will need new o-rings and gaskets, lube the o-ring and press it back together.

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