Cadillac CTS 2008 3.6 263HP burns oil
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2008-2013 Cadillac CTS General Discussion Discussion, Cadillac CTS 2008 3.6 263HP burns oil in Cadillac CTS Second Generation Forum - 2008-2013; Hello, What should I do? My Cadillac CTS 2008 (68000 miles) burns oil. I'm using recommended oil Mobile 1 5w30. ...
  1. #1
    Mat1989rr is offline Cadillac Owners Member
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    Cadillac CTS 2008 3.6 263HP burns oil

    Hello,

    What should I do?

    My Cadillac CTS 2008 (68000 miles) burns oil. I'm using recommended oil Mobile 1 5w30.

    I did consumption test. After 2500 miles there is no oil in my car (dipstick shows that oil is on the lowest level).

    I do not have warranty.

    Please help me!

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  3. #2
    JCBCTS is offline Cadillac Owners Member
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    Re: Cadillac CTS 2008 3.6 263HP burns oil

    I'm sure you know that lowest point on the dipstick is much different than no oil. You are probably just over a quart low when you get to that point. I bought my 2008 at 16k miles and it burned about 2 quarts between oil changes (about 7000 miles) so you may not be all that far off of the pace - its now settled in at about 1.5 quarts. I do my full oil changes with Mobile 1 and then keep a couple of quarts of Oriley full synthetic around for top-offs. You could switch to Castrol high mileage oil but keep in mind that it is not full synthetic so you may want change the oil a bit more frequently...say every 5k miles.

    The CTS V-6 is known to use some oil between changes. Don't panic unless you 1. See white smoke coming out of the tailpipe or 2. You see puddles of oil under the car

  4. #3
    somedaycts is offline Cadillac Owners Fanatic
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    Re: Cadillac CTS 2008 3.6 263HP burns oil

    ^What he said. If the oil is in the cross-hatch at the tip/bottom of the dipstick, it is around 1 quart low. The engine can holds around 6 quarts of oil.

    My former 09, same motor as yours, went through 1 quart every 3000 miles or so. GM considers 1 quart per 2000 miles as normal consumption. Overall the 3.6L seems to have a bad habit of eating oil.

  5. #4
    Mat1989rr is offline Cadillac Owners Member
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    Re: Cadillac CTS 2008 3.6 263HP burns oil

    JCBCTS, thank you for your response!

    So how can I check how much oil my Cadillac burned?

    After 2000 miles (not 2500 miles), oil is on the lowest point of dipstick.

  6. #5
    LastTripToTulsa is offline Cadillac Owners Member
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    Re: Cadillac CTS 2008 3.6 263HP burns oil

    Quote Originally Posted by Mat1989rr View Post
    JCBCTS, thank you for your response!

    So how can I check how much oil my Cadillac burned?

    After 2000 miles (not 2500 miles), oil is on the lowest point of dipstick.
    After you check it when it's low, fill it until the dipstick reads its full. However much you had to put in is how much it's burned. My guess is you are not as low as you're thinking you are. Probably only a quart to a quart and a half. Don't get too worried about it until you actually know how much you are really burning. Good luck. Keep us posted.

  7. #6
    gohawks63's Avatar
    gohawks63 is offline Cadillac Owners Connoisseur
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    Quote Originally Posted by JCBCTS

    The CTS V-6 is known to use some oil between changes. Don't panic unless you 1. See white smoke coming out of the tailpipe or 2. You see puddles of oil under the car
    Actually blue smoke is indicative of burning oil. White smoke results from water/coolant entering the combustion chamber who's is usually a result of a blown head gasket.

  8. #7
    Z71's Avatar
    Z71
    Z71 is offline Cadillac Owners Connoisseur
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    Re: Cadillac CTS 2008 3.6 263HP burns oil

    Per GM.
    All engines require oil to lubricate and protect the load bearing and internal moving parts from wear including cylinder walls, pistons and piston rings. When a piston moves down its cylinder, a thin film of oil is left on the cylinderwall. During the power stroke, part of this oil layer is consumed in the combustion process. As a result, varying rates of oil consumption are accepted as normal in all engines.

    Oil Consumption
    The accepted rate of oil consumption for engines used in the vehicles referenced is 0.946 liter (1 qt) in 3200 km (2000 mi).



  9. #8
    Mat1989rr is offline Cadillac Owners Member
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    Re: Cadillac CTS 2008 3.6 263HP burns oil

    I put 1 qt of oil and now dipstick is full of oil.

    I didn't try to put more oil.

    It means that my Cadillac burns 1 qt of oil, right?

  10. #9
    popacork's Avatar
    popacork is offline Cadillac Owners Member
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    Re: Cadillac CTS 2008 3.6 263HP burns oil

    Quote Originally Posted by Mat1989rr View Post
    I put 1 qt of oil and now dipstick is full of oil.

    I didn't try to put more oil.

    It means that my Cadillac burns 1 qt of oil, right?
    Right.

  11. #10
    C "T" ess's Avatar
    C "T" ess is offline Cadillac Owners Connoisseur
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    Re: Cadillac CTS 2008 3.6 263HP burns oil

    Don't [U]ever[U] fill the oil above the top fill line on the dipstick. Putting too much oil in is actually worse than too little, although neither is good.

  12. #11
    928S is offline Cadillac Owners Connoisseur
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    Re: Cadillac CTS 2008 3.6 263HP burns oil

    Mat1989rr, 2008-09 CTS owners,

    You might want to read this related thread:
    http://www.cadillacforums.com/forums/2008-2013-cadillac-cts-general-discussion/283571-oil-dipstick.html#post3242626

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