Replace or repair oil cooler - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 09-19-2019, 05:44 AM Thread Starter
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Replace or repair oil cooler

Looking for advice on wether I should buy a oem gasket and oring kit to reseal my factory oil cooler or just buy a replacement oil cooler all together.

It leaks in winter, finely misting that area of the engine bay/ wheel well. It was doing it last winter but when the weather warmed up it stopped. I donít have any coolant in my oil so no internal failure.


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post #2 of 8 Old 09-19-2019, 09:27 AM
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If you already have it out to reseal it would make sense just to replace it anyways. The new kit will come with new gaskets etc. Would just be for an easy piece of mind. My fathers 7.3l never had an issue with oil/coolant mixture. Woke up one morning to tow the tractor checked the oil and it was slurry half way up the dipstick. Just decided to randomly go one night.
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post #3 of 8 Old 09-19-2019, 09:46 AM
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if rust is a big issue in your area replace it all together with motorcraft/oem ONLY. if rust is not an issue its generally straight forward. the tabs used to separate have broke off on a couple of rusty ones so that's my rule lol.

-99 F250, 4X4, 6.0 trans cooler, 08 mirrors, 05 grill, AIS Intake, lvl kit, JW Vbody, cncfab hpop lines, WW2.

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post #4 of 8 Old 09-19-2019, 05:56 PM Thread Starter
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No rust. Itís been a Texas/Oklahoma truck. I understand it could just break one day, but how likely is that? I mean it could just throw a piston through the block one day too, so yeah?

It just unfortunate that so many small things have come up on this truck recently so Iím trying to save as much money as I can while still fixing things the right way.


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post #5 of 8 Old 09-23-2019, 05:51 PM
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Up to you but it's a pretty nasty dirty job. I'd sure hate to do a reseal then have to go back and do a replacement.
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post #6 of 8 Old 09-23-2019, 06:06 PM
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That style oil cooler is pretty robust, I would re-seal and not look back

Be careful when re-installing to keep the alignment of the surfaces square with each other

As mentioned before, your gonna get some oil on you -- pulling the fender liner helps a little

In my defense, I was unsupervised
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General note:
For all those wanting a premium silicone sealer Kubota 70000-73764 is the best your gonna find. This is a hybrid gray silicone that uses solvent rather than acid to start the curing reaction, this makes it safe for aluminum and and any surface that involves coolant.
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post #7 of 8 Old 09-23-2019, 06:31 PM Thread Starter
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Thanks for the input. I forgot to mention that I went ahead and ordered the OEM reseal kit from RiffRaff diesel. Just got it in today.

I understand itís gonna be a dirty job and Iím ok with that. Iíve seen a few videos on the job. Iíll go slow and be careful with the parts. Honestly trying to save the money though.


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post #8 of 8 Old 09-23-2019, 09:01 PM
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It’s actually really easy. The most difficult part commonly is getting it back together. Took me maybe couple hours. It was first time and one tab used to pry the tubes apart bent so had to get a little creative to separate them.

Good chance to check the coolant system too: inspect hoses, clamps, thermostat, water pump, water pump outlet etc.

-99 F250, 4X4, 6.0 trans cooler, 08 mirrors, 05 grill, AIS Intake, lvl kit, JW Vbody, cncfab hpop lines, WW2.

04 Excursion Modified, 04 F350 Modified, 06 F350 Modified

Interested in learning something new?


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