2006 DTS Oil & ATF
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Northstar Engines and System Technical Discussion Discussion, 2006 DTS Oil & ATF in Cadillac Engine Technical Discussion; Not sure if this is the right thread, but I've been running Royal Purple oil and oil filter. I was ...
  1. #1
    jonjay206 is offline Cadillac Owners Member
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    2006 DTS Oil & ATF

    Not sure if this is the right thread, but I've been running Royal Purple oil and oil filter. I was just wondering what you guess thought about it, and if there is someone else that ran it and found a better option or was told not to for (reason).


    Also I was wondering if I should run the Royal Purple ATF trany fluid or if I should stick with the GM dealer brand, (which is ?, if anyone knows) I heard that running some highend stuff on cadys isn't recommended.. So if anyone has some advise that would be great.

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    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: 2006 DTS Oil & ATF

    This subject has been beaten to death. There is no "best" oil. One is as good as the next. The "best" is what YOU think is the best. They all do the same job whether you paid $10/qt or $2/qt.

    Use Dexron VI trans fluid.

  4. #3
    jonjay206 is offline Cadillac Owners Member
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    Re: 2006 DTS Oil & ATF

    yeah I'm sure it has just like any other question in any forum, but I'm new here and haven't seen it and I didn't feel like going through 100+ threads to get the info that is if I even find the same question that I've asked. So I apologize.

    Can someone post up the thread and I'd be glad to get the info from in there.

  5. #4
    Submariner409's Avatar
    Submariner409 is online now If it won't run, stick on fender vents
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    Re: 2006 DTS Oil & ATF

    The "Oil Wars" began long before I was born and will continue long after I'm pushing up daisies. There is no thread which will answer all your oil questions. Instant gratification is doing homework, so if you're unwilling to do some research, then consider.........

    Suffice to say that a name brand oil in the viscosity range recommended for your car, whether dino or synthetic, when changed with a good filter according to the DIC OLM in your car, will assure a long, happy engine life.

    My take, posted before, is that oil and filters are in the same preference class as whiskey and women: everyone has their pet likes and dislikes, and for me to tell you to run Dorothy's Magic Engine Life Oil and Cleaner Solution is useless.

    Do a LOT of reading in www.bobistheoilguy.com, and Google "knize family oil filter study" and "knize family oil filter opinion".

    You are free to spend as much or as little as you please on oils but for a daily driver, whether city, highway, or combination, a name brand oil recommended for your engine is all you need. Certainly, companies like Royal Purple would like your $$$ and allegiance, but you don't need to run it for 99.999% of your engine's operating conditions.

    (then again, if you spend enough $$$ on high-end oils you might just buy a sticker on Danica Patrick's Indy car - but do you really think her crew chief runs the stuff in the engine ?? Really ???)

  6. #5
    Skiller.'s Avatar
    Skiller. is offline Cadillac Owners Connoisseur
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    Re: 2006 DTS Oil & ATF

    I will help you out. Oil is oil

    Which bottle looks the coolest??

    As for the transmission fluid - Dexron VI synthetic (GM).

  7. #6
    zonie77 is offline Cadillac Owners Connoisseur
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    Re: 2006 DTS Oil & ATF

    Use a good oil ( Castrol, Pennzoil, Quaker State, etc, etc, etc) and change it a little early and things will be good. By a little I don't mean at 50% oil life, more like 10-15%. I'd avoid store brand oils but no need to spend big bucks.

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