Synthetic Blend?
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Northstar Engines and System Technical Discussion Discussion, Synthetic Blend? in Cadillac Engine Technical Discussion; I've read previous posts saying that synthetics are not necessesary or reccomended in a North*. I was curious what the ...
  1. #1
    STS127 is offline Cadillac Owners Fanatic
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    Synthetic Blend?

    I've read previous posts saying that synthetics are not necessesary or reccomended in a North*. I was curious what the deal is with a synthetic blend. Good or bad for a North*?

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  3. #2
    JimD is offline Cadillac Owners Connoisseur
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    Re: Synthetic Blend?

    They are not harmful to your engine. But you won't see any benefit either. In fact, "starburst" 10W-30 dino oils contain some synthetic materials in order to obtain the viscosity range.

    You pays your money and makes your choice.

  4. #3
    clarkz71's Avatar
    clarkz71 is offline Cadillac Owners Connoisseur
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    Re: Synthetic Blend?

    Quote Originally Posted by JimD View Post
    But you won't see any benefit either.
    How would you know? You would have to run two engines for the same amount of miles under hard conditions, disassemble them and compare them. If there was no benifit to synthetic oils, Cadillac wouldn't recommend it for the CTS-V or Chevrolet for the Corvette. I agree it's not necessary, but I don't agree that there's no benefit.

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    JimD is offline Cadillac Owners Connoisseur
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    Re: Synthetic Blend?

    The question was asked for a '96 vintage Northstar. I'll go with the factory fill and recommended 10W-30 dino oil counting on the fact that the high dollar GM powertrain engineering staff did the pounding and measuring.

  6. #5
    clarkz71's Avatar
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    Re: Synthetic Blend?

    Actually, the FSM or owners manual doesn't specify dino, only that the oil is API starburst certified 10/30 which Mobil 1 is.

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    clarkz71's Avatar
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    Re: Synthetic Blend?

    OK, so BBob said if your going to use synthetic, use Mobil 1. He did not say you won't see any benefit, only that it wasn't necessary. Hey,if you want to drink scotch, Johnny Walker Blue Label isn't necessary, but it sure taste's better then rack scotch.

  9. #8
    eldorado1 is offline Cadillac Owners Connoisseur
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    Re: Synthetic Blend?

    I use my Rotella T synthetic

  10. #9
    EcSTSatic's Avatar
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    Re: Synthetic Blend?

    It was in an issue of Hot Rod magazine a whlie back. Mobile 1 Synthetic oil improved 1/4 times slightly. Is it worth it on a daily driver? Not.

  11. #10
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    Re: Synthetic Blend?

    Quote Originally Posted by eldorado1 View Post
    I use my Rotella T synthetic

    Sure wish I could find the Rotella T 10W30 somewhere in my area.

  12. #11
    clarkz71's Avatar
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    Re: Synthetic Blend?

    Quote Originally Posted by EcSTSatic View Post
    It was in an issue of Hot Rod magazine a whlie back. Mobile 1 Synthetic oil improved 1/4 times slightly. Is it worth it on a daily driver? Not.
    Another opinion heard from. and that's just what it is, an opinion. Whether it's worth it or not depends on driving conditions and if your willing to get off your wallet. How about this, if you won a contest at Walmart, and the prize was a lifetime supply of oil. Your choice was any dino 10/30 or Mobil 1 10/30, what would you choose? Oh, and if Mobil 1 improved 1/4 mile times that's because it reduced friction in the engine. Is that worth it on ANY engine, daily driver or weekend racer?? Yes

  13. #12
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    Submariner409 is offline If it won't run, stick on fender vents
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    Re: Synthetic Blend?

    Chazglen, snoop around Washington for a dealer in marine lubricants. You'll come up with enough Rotella, Gulf, and Chevron HD oils to float a battleship.

  14. #13
    eldorado1 is offline Cadillac Owners Connoisseur
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    Re: Synthetic Blend?

    Quote Originally Posted by chazglenn3 View Post
    Sure wish I could find the Rotella T 10W30 somewhere in my area.
    I don't think the 10W30 comes in synthetic

  15. #14
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    Re: Synthetic Blend?

    I don't think he is looking for synthetic.

  16. #15
    eldorado1 is offline Cadillac Owners Connoisseur
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    Re: Synthetic Blend?

    Well that's too bad then... losing out on a lot of good properties...

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