Installed an oil catch can - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 5.3L V8 Engine and Drivetrain > Engine Tunes/Mods

Engine Tunes/Mods Performance Engine Tuning/Engine Modifications

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  #1  
Old 05-02-2019, 06:09 AM
Jewel red 5 Jewel red 5 is offline
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2007 GMC Envoy Denali
Liquid Silver Metallic 5.3L V8 AWD
Join Date: Dec 2012
Location: NJ
Posts: 97
Installed an oil catch can

I installed an oil catch can 2 weeks ago, can't believe after 300 miles a little puddle in the bottom. Would have done it years ago if I knew how much was going back into intake. I flushed everything with sea foam through the brake booster and the top PVC intake on manifold and cleaned throttle body. I must say it runs a lot better more responsive. Cant believe how much oil mist id sent through the PVC. I did an oil change after also incase the sea foam got in the system. Eng is all original since new, no valve cover upgrade as some have done.
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  #2  
Old 05-02-2019, 09:17 AM
TB-Al's Avatar
TB-Al TB-Al is offline
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2007 Chevy TrailBlazer LS
Graystone Metallic 4.2L I6 2WD
Join Date: Nov 2017
Location: Pleasure Island, Al.
Posts: 292
I install a catch can on more performance engines. There is a lot of oil going through the intake on engines these days and the older the engine the more ring wear meaning even more vapor to dispose of. Back in the olden days they just routed the PCV to the air cleaner and let the oil go into the air filter. That seemed a better solution to me because you could see what was happening and change the filter.

But the current system of dumping the oil into the intake manifold isn't all that bad for performance. It looks bad but the cost of a can is hard to justify if you don't need every ounce of power and economy.
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Old 05-02-2019, 05:28 PM
Jewel red 5 Jewel red 5 is offline
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2007 GMC Envoy Denali
Liquid Silver Metallic 5.3L V8 AWD
Join Date: Dec 2012
Location: NJ
Posts: 97
Agreed I had a 1980 Buick century as my first car it had a breather inside the air filter carbourator cap, it connected to the PVC what a mess it used to make. Catch can was only 35.99 was a cheap one but it works great.
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