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2008-2013 Cadillac CTS General Discussion Discussion, Holy Oil Consumption Bat Man! in Cadillac CTS Second Generation Forum - 2008-2013; as far as I know GM does employ cross-hatching in the cylinder walls (at least on the one's i've seen ...
  1. #31
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    Re: Holy Oil Consumption Bat Man!

    as far as I know GM does employ cross-hatching in the cylinder walls (at least on the one's i've seen - old and newer northstar engines and the newer 3.6L LY7 engines)

    this cross-hatching endures - it's still there and clearly visible after a hundred thousand miles
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  2. #32
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    Re: Holy Oil Consumption Bat Man!

    Quote Originally Posted by kingtj View Post
    This debate is probably found somewhere on EVERY car forum on the net! (And it's funny how often that motoman guy's pages are cited, too. I've seen it at least 4 times now with 4 different vehicles I've owned and joined forums for.)

    The best explanation I've been able to get on all of this came from a mechanic who said, essentially, it probably doesn't make much difference how you break a car in these days.

    1. All the theory people like motoman discuss, about cross-hatch patterns in the cylinder walls that are worn down in the first 20-25 miles of driving (and therefore necessary to make use of right away with a hard break-in, to get those rings sealed) don't typically apply to cars or trucks these days, because such patterns aren't even employed anymore. That would still apply to smaller motorcycle engines -- but not an engine like what's in our Cadillac.
    Wrong.

    Engines still require a cross hatch pattern, and it is still employed in engine manufacturing across the board. They never truly disappear. Even thousands of miles later they are still visible, but not to the degree they were when there were 0 miles on the clock.

  3. #33
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    Re: Holy Oil Consumption Bat Man!

    Quote Originally Posted by kingtj View Post
    1. All the theory people like motoman discuss, about cross-hatch patterns in the cylinder walls that are worn down in the first 20-25 miles of driving (and therefore necessary to make use of right away with a hard break-in, to get those rings sealed) don't typically apply to cars or trucks these days, because such patterns aren't even employed anymore. That would still apply to smaller motorcycle engines -- but not an engine like what's in our Cadillac.
    A Picture is worth a thousand words. 2004 6.6L Duramax. Cross hatching clearly visible with 165k on it.
    Attached Images

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    Re: Holy Oil Consumption Bat Man!

    Chris Heath (RippyPartsDept) is an ASE Certified GM Parts Consultant at Rippy Automotive
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  5. #35
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    Re: Holy Oil Consumption Bat Man!

    Ok... well, I obviously stand corrected on the cross-hatching then, except for the fact it's clearly not something you have to worry about it wearing smooth after only a short time, meaning a hard initial break-in is critical during the first few miles of ownership!

  6. #36
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    Re: Holy Oil Consumption Bat Man!

    If anything, I wonder if CTS break-in (500mi / 805km) should be even longer?

    For example, Porsche recommended break-in procedure is more thorough with a duration of 2000mi / 3000km. In my 20 years of hard driving Porsche V8s, those engines never consumed any discernable amount of oil. Donít know if break-in contributed to good result or not.

    Automakers have surely conducted controlled tests of various break-in procedures vs. none, but Iíve never seen their findings revealed or discussed.

  7. #37
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    Re: Holy Oil Consumption Bat Man!



    i figured i would do a quick google search to check if porsches consume oil sometimes (just like most other cars) ... apparently they do

    also ... i couldn't help but notice the '911' coincidence ...
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  8. #38
    928S is offline Cadillac Owners Connoisseur
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    Re: Holy Oil Consumption Bat Man!

    Quote Originally Posted by RippyPartsDept View Post
    i figured i would do a quick google search to check if porsches consume oil sometimes (just like most other cars) ... apparently they do

    also ... i couldn't help but notice the '911' coincidence ...
    Yeah, 911s were legendary for oil consumption - never owned one. My good experience was limited to 928S 5.0L V8s.

  9. #39
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    Re: Holy Oil Consumption Bat Man!

    we've got a 1980 928 in the shop right now ... waiting on a reman'd fuel distributor
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  10. #40
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    Re: Holy Oil Consumption Bat Man!

    900 miles on my 2013 Coupe and had to add 1/2 quart. This is not normal for any car. Only new vehicle I bought that use oil was a 1978 Datsun and only used a quart every 3K miles. And that was if I did a lot of highway driving. I just traded my 2011 Silverado in on a 2013 Silverado and neither use oil. The 2011 Silverado never used a drop between oil changes and I was changing oil and filter every 15K miles using 'Mobil1 EP' oil. The old oil came out so nice and clean I actually kept it for use in the lawn mower and use it for the chain saw bar oil. 3 brand new S10 blazers and they where the same. New vehicles using more than a Quart of oil in less than 2-3K miles is poor design. Cadillac better get there junk together because word of mouth will negate millions of dollars spent on advertising and drag down sales.
    After reading this thread, I think I will forgo the free oil changes from GM dealer and be putting in the 'Mobil1 EP' and see what that does. Have to wonder how good GM's DEXOS Synthetic Blend is. I know the 1978 Datsun used more when I used Pennzoil than when I used Valvoline. Never did find out why. They both had the same specifications.
    MoFex and Mn800r like this.

  11. #41
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    Re: Holy Oil Consumption Bat Man!

    Dexos is the recommended oil for the CTS. Since Cadillac is on the hook for damaged engines, I'm sure they did some testing to insure that it's specifications were suitable for this engine.

  12. #42
    adamjeeps is offline Cadillac Owners Enthusiast
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    There are many oils that meet the Dexos specification, including Mobil One.

    Sent from AutoGuide.com Free App

  13. #43
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    Re: Holy Oil Consumption Bat Man!

    Not all mobil1 formulas are dexos approved ....
    Chris Heath (RippyPartsDept) is an ASE Certified GM Parts Consultant at Rippy Automotive
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  14. #44
    adamjeeps is offline Cadillac Owners Enthusiast
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    You are right Chris. The Dexos spec will be on the bottle if it meets it.

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  15. #45
    conedoctor is online now Cadillac Owners Connoisseur
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    Re: Holy Oil Consumption Bat Man!

    You can't tell how rough a cylinder wall is by looking at it, the ridges of the cross hatch are long gone but the shadow will remain but it is not "rough" anymore.


    Those with race cars that don't drive on the street don't always have the drive it nice option and it has worked for many in the race community.

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