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Northstar Engines and System Technical Discussion Discussion, High Mileage Northstar Thread: Who can beat me? in Cadillac Engine Technical Discussion; Had mine flushed and refilled with green GO GO!! years ago. Basically because oil change place couldn't do Dex-cool. At ...
  1. #286
    drivendeville's Avatar
    drivendeville is offline Cadillac Owners Member
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    Re: High Mileage Northstar Thread: Who can beat me?

    Had mine flushed and refilled with green GO GO!! years ago. Basically because oil change place couldn't do Dex-cool. At 562,000+ now...

  2. #287
    Mountie's Avatar
    Mountie is offline Cadillac Owners Enthusiast
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    Re: High Mileage Northstar Thread: Who can beat me?

    Quote Originally Posted by drivendeville View Post
    Had mine flushed and refilled with green GO GO!! years ago. Basically because oil change place couldn't do Dex-cool. At 562,000+ now...
    Holy sh*t !!!

  3. #288
    mtflight's Avatar
    mtflight is offline Cadillac Owners Connoisseur
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    Re: High Mileage Northstar Thread: Who can beat me?

    Lucky! I suspected that. Thanks for replying and I wish you many many many more miles to come!

  4. #289
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: High Mileage Northstar Thread: Who can beat me?

    Deleted by me. Arguing is pointless.

  5. #290
    CadillacLuke24's Avatar
    CadillacLuke24 is offline Cadillac Owners Connoisseur
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    Re: High Mileage Northstar Thread: Who can beat me?

    Quote Originally Posted by drivendeville View Post
    Had mine flushed and refilled with green GO GO!! years ago. Basically because oil change place couldn't do Dex-cool. At 562,000+ now...
    The gravy train keeps a rollin'

    Don't worry Sub. We'll get there with the great pumkin brew

  6. #291
    Gonjafishing is offline Cadillac Owners Member
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    Re: High Mileage Northstar Thread: Who can beat me?

    2001 SLS 110467 km front wheel hubs and a regular maintenence

  7. #292
    eldorado_97's Avatar
    eldorado_97 is offline Cadillac Owners Enthusiast
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    Re: High Mileage Northstar Thread: Who can beat me?

    2000 STS, 134,785 miles New water pump, radiator, crossover gaskets, valve cover gaskets, and rear shocks otherwise everything else runs like a dream!

  8. #293
    CadillacLuke24's Avatar
    CadillacLuke24 is offline Cadillac Owners Connoisseur
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    Re: High Mileage Northstar Thread: Who can beat me?

    drivendeville, UPDATE!!

  9. #294
    crabgrass's Avatar
    crabgrass is online now Cadillac Owners Member
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    1996 deville 278,232. 2 water pumps,fuel pump, a few alternators, coil pack, radiator, starter. Still going strong but it leaks oil like crazy from the pan and half seal.

  10. #295
    CadillacLuke24's Avatar
    CadillacLuke24 is offline Cadillac Owners Connoisseur
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    Re: High Mileage Northstar Thread: Who can beat me?

    That is encouragement for me! Thanks Crabgrass!

  11. #296
    drivendeville's Avatar
    drivendeville is offline Cadillac Owners Member
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    Re: High Mileage Northstar Thread: Who can beat me?

    Driving my life away...

  12. #297
    CadillacLuke24's Avatar
    CadillacLuke24 is offline Cadillac Owners Connoisseur
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    Re: High Mileage Northstar Thread: Who can beat me?

    HOLY HIGH MILES BATMAN! Excellent work!! Keep it up!!

    Thank you for the update

  13. #298
    Mafiaman111 is offline Cadillac Owners Fanatic
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    Re: High Mileage Northstar Thread: Who can beat me?

    i cant compete with drivendeville but my 98 Eldorado has 165,100 miles and blew the head gasket at 97,000 miles. 1 Water Pump, new filler neck, rear knuckle bushings, new rear shocks, new door panel, cat converter, rim and abs pump other then that the car is original and the interior has hardly any wear to it other then warped dash cover and rear panels

  14. #299
    rocketvette95's Avatar
    rocketvette95 is offline Cadillac Owners Member
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    Re: High Mileage Northstar Thread: Who can beat me?

    Well the STS I just got in October is ar 138000. The only engine issue (knock on wood) is the front valve cover leaking oil and I need to replace the oil pressure sending unit.I have replaced the fuel level sensor,both outer tie rods,right front hub,replaced the EBTCM.
    I was really second guessing the purchuse of the 2002 STS. I had sold my 1994 Fleetwood Brougham ,after I had a fellow that wanted it more than I did,and I ended up buying this STS. So far after spending a little time and money to get it to a nice daily driver I am very happy with it.It does n ot come close to riding like the Fleetwood,but with the FE-3 and F55,this car almost feels like it is on a rail. Living in the BlueRidge Parkway this car is a blast on the mountain roads,it is hard to believe that the 300hp can get up and go in this size car.
    So far I have made one 1000 mile trip and was only able to pull out 23 on the open road. The worst part is the Fleetwood with the LT-1 I could get 26 with no problems. So I am hoping that it will get better,but still with 300hp and 23 mpg I am a happy camper

  15. #300
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: High Mileage Northstar Thread: Who can beat me?

    Long highway runs using 87 octane should get you just about 24.6 - 25 mpg. That's what I get on Shell 87 between MD and FL on I-95, running at 80 - 85 a fair part of the way.

    Check the air filter (WIX), the band clamps on the intake ducting, and the correct placement of the air intake resonator. When were the AC Delco #41-987 plugs last changed ? Is TCC engaging ?? - - - flat road, 60 mph = 1980 rpm in D.

    Look in my albums for hints on how to get rid of that stupid resonator plus other stuff.............

    You're gonna think I'm crazy, but simply changing an apparently perfectly fine fuel pressure regulator netted me another mpg.

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