2005 3.6 - oil consumption issue - can someone tell me why
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, 2005 3.6 - oil consumption issue - can someone tell me why in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; why my 2005 cts 3.6l uses alot of oil and what can i do about it thaks all...
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    vec666 is offline Cadillac Owners Member
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    2005 3.6 - oil consumption issue - can someone tell me why

    why my 2005 cts 3.6l uses alot of oil and what can i do about it thaks all

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    vec666 is offline Cadillac Owners Member
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    re: 2005 3.6 - oil consumption issue - can someone tell me why

    is this common for this engine to use alot of oil, thinking about putting it up for sale but i do love the cadillac any help thanks all

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    AAIIIC's Avatar
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    Re: 2005 3.6 - oil consumption issue - can someone tell me why

    I updated the title of the thread so that more people will look at it. A generic title like "can someone tell me why" doesn't tend to get people to look at the thread.

    And yes, oil consumption is a common issue. How much oil is your car using?
    '05 Stealth Grey CTS-V, Hyper Silver Linea Corse Venetos w/Continental ExtremeContact DWs (summer), black Team Dynamics ProRace 1.2 wheels with 275/35-18 R-compounds (track), Hyperblack Rota Torques (winter), KW Variant3s, V2 front brakes, Hotchkis rear sway bar, EPS cam, TEA-ported 243 heads, FAST92 intake w/LS2 TB, JBA Camaro/G8 1-3/4" shorty headers w/JBA cat pipes, Corsa exhaust, UUC motor and tranny mounts, UUC shifter, MAPerformance trailing arms, Specter cradle bushings, etc...

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    vec666 is offline Cadillac Owners Member
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    Re: 2005 3.6 - oil consumption issue - can someone tell me why

    Just under a litre a month

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    CTSM is offline Cadillac Owners Enthusiast
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    Re: 2005 3.6 - oil consumption issue - can someone tell me why

    Quote Originally Posted by vec666 View Post
    Just under a litre a month
    And how many miles does that translate to in your car?

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    vec666 is offline Cadillac Owners Member
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    Re: 2005 3.6 - oil consumption issue - can someone tell me why

    300-500 miles

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    Z71's Avatar
    Z71
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    Re: 2005 3.6 - oil consumption issue - can someone tell me why

    I had a 2005 CTS with 3.6L engine and in 4ys and roughly 40,000 miles I never used any oil or added any it and I ran yearly (10,000 mile) oil changes.

    What kind and brand of oil are you using or have been up to this time? Might be related to inferior oil.

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    Thyine is offline Cadillac Owners Member
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    Re: 2005 3.6 - oil consumption issue - can someone tell me why

    it comes from worn rings and stretched out valve seals. some say through the pcv orifice, although imo its the lesser of the evils

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    ConsumedThatSh!t is offline Cadillac Owners Member
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    Re: 2005 3.6 - oil consumption issue - can someone tell me why

    Oh lol

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    vec666 is offline Cadillac Owners Member
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    Re: 2005 3.6 - oil consumption issue - can someone tell me why

    i have had it for 6 months and in that time only used mobil1 0w/40 fully synthetic and when i got it the mileage was 60k, now it is 65k and i have done one oil change in this time,

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    0-40 0_o

  13. #12
    holsgo is offline Cadillac Owners Fanatic
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    Re: 2005 3.6 - oil consumption issue - can someone tell me why

    Stop running the wrong oil.
    Unless you are a tribologist the oil viscosity isn't your decision to make.
    Change the oil every 3,000 instead of the higher milage. This will force you to keep it fresh. This is better for the PCV and if fresh, the oil won't want to gum up the PCV. Second, top off each week. Yes, they burn oil, no, it's not a big deal....but a liter (quart) every 500 miles? That's sounding like a problem.

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    vec666 is offline Cadillac Owners Member
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    Re: 2005 3.6 - oil consumption issue - can someone tell me why

    what oil should i use

  15. #14
    holsgo is offline Cadillac Owners Fanatic
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    Re: 2005 3.6 - oil consumption issue - can someone tell me why

    Mine drinks 5w-30.

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    vec666 is offline Cadillac Owners Member
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    Re: 2005 3.6 - oil consumption issue - can someone tell me why

    it was the only cadillac part time dealership in the uk that told me to use that oil and how much does yours drink

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