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Old 04-13-2013, 07:38 PM   #1
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PCV oil/water catch can

One of the first mods I made to the wifes 2013 JKU was a PCV oil/water catch can. I was suprised there was so much in there after 1000 miles. At least the throttle body and intake will be clean. Here's the parts list:

*small air compressor water seperator (filter removed)
*few feet of 5/8" fuel hose
*one 90 degree 5/8" double barbed plastic fitting
*one 5/8" double barbed plastic fitting
*two brass 3/8 npt x 5/8" barbed fittings
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Old 04-13-2013, 11:20 PM   #2
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Nice....do you have pictures of where the stock hose runs into the intake? I am planning on this being my first mod...would like to know exactly where to tap into it.

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Old 04-13-2013, 11:41 PM   #3
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I circled where the pcv hose hooks up to the throttle body
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Old 04-14-2013, 12:28 AM   #4
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It will fill faster on a fresh oil change (New vehicle?), and wen using dyno oil. It should slow down after 1000 miles, and only collect a few table spoons between 1000 miles, and when you change it next. Switching to a quality synthetic oil should reduce the amount collected also.
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Old 04-14-2013, 12:42 PM   #5
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So far it's only seen new oil. I dumped the factory fiil at 500 miles an put in 5w30 Penzoil. I plan on switching to Penzoil Ultra or Platinum
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Old 04-14-2013, 11:56 PM   #6
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Quote:
Originally Posted by mtomac View Post
I circled where the pcv hose hooks up to the throttle body

thanks...sorry...throttle body is what I meant
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Old 04-15-2013, 06:47 AM   #7
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Quote:
Originally Posted by chris4x4 View Post
It will fill faster on a fresh oil change (New vehicle?), and wen using dyno oil. It should slow down after 1000 miles, and only collect a few table spoons between 1000 miles, and when you change it next. Switching to a quality synthetic oil should reduce the amount collected also.
I'm curious as to how switching from dino to synthetic oil will decrease the amount of blowby. Please take me to school. Thanks.
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Old 04-15-2013, 09:31 AM   #8
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Quote:
Originally Posted by mello03 View Post
I'm curious as to how switching from dino to synthetic oil will decrease the amount of blowby. Please take me to school. Thanks.
I was told that the non synthetic oil breaks down a little faster allowing for there to be more or oil collected in a catch can.
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Old 03-13-2014, 03:39 AM   #9
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Been emptying the "catch can" once a month, it's suprising how much condensation & oil I'm collecting from the pcv system and keeping out of the intake. If the catch can was larger I wouldn't have to empty it so often. I had this small compressor water seperater lying around so I used it. It fit perfectly and is easy to get at to empty. I did have to put a new rubber o-ring on once so far, otherwise it's been working great.

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