A LOT of oil in oil separator - Ford Shelby GT500 Forum
Maintenance Questions and advice on keeping your GT500 in top shape, from engine oil to body wax

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post #1 of 37 (permalink) Old 06-18-2017, 04:08 PM Thread Starter
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A LOT of oil in oil separator

Is there a reason besides piston blow that the oil separator would fill up quickly? The right side oil separator fills up within a 100 miles or less.
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post #2 of 37 (permalink) Old 06-18-2017, 08:17 PM
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Re: A LOT of oil in oil separator

Welcome to the forum Bill!

You should be able to go many thousands of miles before filling up your catch can. Something is not right. Rings?

Also, I deleted your duplicate thread. You couldn't see it because your first 2-posts require approval. It and other things are explained in the New Member area:

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post #3 of 37 (permalink) Old 06-18-2017, 08:53 PM Thread Starter
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Re: A LOT of oil in oil separator

Thanks for the add Goose. I was hoping the second post would get deleted once I saw the post had to be approved. Rings and blow by could be a possibility. I was wondering if there were other ways for excessive oil to get sucked through the catch can like that. I was wondering if there could also be some type of vacuum issues or the PVC valve going gunny sack? Or if anyone else had experienced this and it not be rings.
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post #4 of 37 (permalink) Old 06-19-2017, 04:17 PM
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If oil was getting by the rings, you would likely see blue smoke at times from the tail pipes. Have you noticed that at all?

Also, the AOS fills up faster if you're in boost all the time but certainly not in a 100 miles.
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post #5 of 37 (permalink) Old 06-20-2017, 09:48 AM Thread Starter
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Re: A LOT of oil in oil separator

The only time I'm getting any smoke is if the catch can fills up and the oil is bypassing it. Like on a trip where I go over a 100 miles.
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post #6 of 37 (permalink) Old 06-20-2017, 11:17 AM
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Re: A LOT of oil in oil separator

What oil separator are you using?

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post #7 of 37 (permalink) Old 06-20-2017, 11:18 AM
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Re: A LOT of oil in oil separator

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Originally Posted by Bill Croy View Post
The only time I'm getting any smoke is if the catch can fills up and the oil is bypassing it. Like on a trip where I go over a 100 miles.
Something is waaaay wrong. Try to get another similar year GT500 car nearby to compare engine compartments. Is it possible to have vacuum hoses routed/connected incorrectly to cause this...? I don't know the answer to that, but it's worth comparing.

Is the car otherwise running normally - as in no engine damage?
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post #8 of 37 (permalink) Old 06-20-2017, 12:58 PM
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Re: A LOT of oil in oil separator

Pictures of what you have and how it's hooked up?

Not sure how you could pull that much oil through the vacuum line.



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post #9 of 37 (permalink) Old 06-20-2017, 01:10 PM
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Re: A LOT of oil in oil separator

That's a crazy amount, possible damaged PCV valve on that side?
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post #10 of 37 (permalink) Old 06-20-2017, 05:02 PM
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Re: A LOT of oil in oil separator

Wasn't on a GT500, but in high school my girlfriends Pinto had a PCV valve go bad. Started sucking so much oil into the intake the car looked like a mosquito fogger. If it had an oil separator it would have filled up very quickly.
I'd be checking the PCV valve.

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