Oil Catch Can
Race Director
Joined: Oct 2004
Posts: 12,864
Likes: 4,670
Excellent post! I have a 2000 with an LS7. I vent to atmosphere, no catch can. At nearly 100 thousand miles, it's a bit late. OP will be fine without one. From my research, they mostly help keep excess oil out of the heads with high rpm engines.
Le Mans Master
Joined: Feb 2007
Posts: 9,296
Likes: 1,531
From: Oviedo Florida
2024 C5 of the Year Finalist - Modified
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Not needed. If SC yes.
Good luck
Good luck
Pro
Joined: Sep 2018
Posts: 674
Likes: 306
From: Nova Scotia Canada
If you're looking for some useful info check out Media | mmsolutions (mightymousesolutions.com)
One might suspect this is biased info however it's interesting non the less. I've had one for years, it definitely works. I did have a minor issue with it initially due to how I installed it but received excellent support and solved the problem.
One might suspect this is biased info however it's interesting non the less. I've had one for years, it definitely works. I did have a minor issue with it initially due to how I installed it but received excellent support and solved the problem.
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Drifting
Joined: Sep 2022
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From: In the woods
2024 C5of the Year Finalist - Unmodified
Not my C5 but my Jeep. With almost 200,000 on the clock it has a bit more blowby then new. I empty the catch can every tank full getting about 2 tbsp's of oil every time, a bit more if doing a lot of highway driving. After seeing how nasty the inside of my intake was when replacing the knock sensors it is something I will do to my C5 as well. Oil in the air/fuel mixture fouls up things and lowers the octane as well, something I learned the hard way working Grand National Buicks in the day. Anyone who has experienced detonation or pre ignition under high boost knows what happens next.
Le Mans Master
Joined: Dec 2017
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From: Virginia
2021 C5 of the Year Finalist - Modified
St. Jude Donor '21-'22
On a stock motor there is no need. I have one, but only because I have a supercharger. They do work. However, the car was designed to run without one. They don't do enough on a stock motor to be worth the expense.
Instructor
Joined: Nov 2007
Posts: 167
Likes: 18
From: South East USA
My 2 cents: I just changed my oil pressure sensor. When I got the manifold off I was surprised how much oil found its way into the intake manifold and the front two runners on the heads. I cleaned it all up and I am going to put a catch can on it to prevent it from happening again. It's a 2002 that runs strong at about 84,000 miles. I don't think I have any motor issues...
Administrator
Joined: Mar 2001
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From: In a parallel universe. Currently own 2014 Stingray Coupe.
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I installed one on both my ‘00 and ‘03 Corvettes and the can did catch some oily vapor that would have normally gone into the manifold. II was glad I put one on my car.
Drifting
Joined: Jun 2000
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From: Placitas NM
St. Jude Contributor '03 & '04