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Thread: burning oil

  1. #11
    Join Date
    Jul 2008
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    Racoon Twp., PA
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    1,572
    Yeah, these things vaporize the oil and consume if I remember seeing that on here before. almost 1/2 qt here every 3K.
    2013 CC 5.3
    81 C10 LS1 project

  2. #12
    Join Date
    Jan 2008
    Location
    burlington,Co
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    290
    Just go to ebay and search catch can and you see a bunch of different pictures and such. As far as the breathers just take the pcv line off of the drivers side valve cover and the top of the intake,get a k&n breather that fits the hole in the valve cover and put a vacuum cap over nipple on the intake.
    2008 Trailblazer SS 2wd red jewel 1ss
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  3. #13
    Join Date
    Jan 2005
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    Humble/Houston TX
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    you could try switching oils. when i went from mobil 1 to royal purple i noticed my motor drinks alot more rp than m1. went from 1 quart every 3k of mobil 1 to about a quart every 1k miles with the RP. these motors seem to gulp down the royal purple.

    old mod list: H/C/I/N/E/G 408
    new mod list: 5.3, gears/posi, mufler and tune : (

  4. #14
    Join Date
    Mar 2009
    Posts
    130
    Quote Originally Posted by TXsilverado View Post
    you could try switching oils. when i went from mobil 1 to royal purple i noticed my motor drinks alot more rp than m1. went from 1 quart every 3k of mobil 1 to about a quart every 1k miles with the RP. these motors seem to gulp down the royal purple.
    wow
    Nothing stock...I either broke it or replaced it before I broke it!!

  5. #15
    Join Date
    Jan 2005
    Location
    Humble/Houston TX
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    2,586
    my truck is a toy though. that 1k miles is driven HARD.

    old mod list: H/C/I/N/E/G 408
    new mod list: 5.3, gears/posi, mufler and tune : (

  6. #16
    Join Date
    Mar 2007
    Location
    Newark, Delaware
    Posts
    931
    Quote Originally Posted by lowchevytrucks8503 View Post
    is there a certain year I need? or just a new one for my '03?
    Your '03 should already have the fixed orifice PCV valve. Here's the info from Rockauto.com:

    ACDELCO Part # CV4000C {#12572717}
    VALVE,PCV w/4-SPD A/TRANS(M30)
    Big slow mud truck with a TUNE!!!!!!

  7. #17
    Join Date
    Nov 2007
    Location
    Pittsburgh, PA
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    3,581
    Quote Originally Posted by TXsilverado View Post
    you could try switching oils. when i went from mobil 1 to royal purple i noticed my motor drinks alot more rp than m1. went from 1 quart every 3k of mobil 1 to about a quart every 1k miles with the RP. these motors seem to gulp down the royal purple.
    dont forget to mention you have a higher mileage well worn ls1





    to the OP ditch the PCV totally. dont worry about a catch can thats just something ppl made money on ppl with. Install 2 breathers one on each valve cover. cap all the existing lines off and run 6.5 quarts of oil in yoru rigt and youll be fine till you cahnge your oil at 3500 miles

    my last two motors didnt consume any oil, id didnt route the fumes back into the motor either. Also routing the fumes which can also be oil vapors can lead to detonation. oil doesnt mix well in the combustion chamber
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  8. #18
    Join Date
    Mar 2009
    Posts
    130
    Quote Originally Posted by Quik View Post
    dont forget to mention you have a higher mileage well worn ls1





    to the OP ditch the PCV totally. dont worry about a catch can thats just something ppl made money on ppl with. Install 2 breathers one on each valve cover. cap all the existing lines off and run 6.5 quarts of oil in yoru rigt and youll be fine till you cahnge your oil at 3500 miles

    my last two motors didnt consume any oil, id didnt route the fumes back into the motor either. Also routing the fumes which can also be oil vapors can lead to detonation. oil doesnt mix well in the combustion chamber
    what size breathers are needed as far as the part that goes in the valve cover?
    Nothing stock...I either broke it or replaced it before I broke it!!

  9. #19
    Join Date
    May 2009
    Location
    Wichita Falls, TX
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    883
    Bump
    2003 SIERRA- 5.3 DD
    1985 SWB C10- slow, future plans- shaved, painted, 6.0/4l80e

  10. #20
    Join Date
    Dec 2007
    Location
    Union, MO
    Posts
    510
    I'm interested in this too. Does anyone have a engine pic with the breather filter installed?
    2010 Silverado ECSB LS 4x4. Only mods so far are a K&N drop in filter and a Rough Country 2" front level kit

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