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Northstar Engines and System Technical Discussion Discussion, High Mileage Northstar Thread: Who can beat me? in Cadillac Engine Technical Discussion; 95' STS N*, 180K+ miles(As I recall it's very close to 190k), runs great with Nitrous too. Replaced almost everything ...
  1. #31
    Freep is offline Cadillac Owners Member
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    Re: High Mileage Northstar Thread: Who can beat me?

    95' STS N*, 180K+ miles(As I recall it's very close to 190k), runs great with Nitrous too. Replaced almost everything AROUND the motor, including new tranny(This was when I first got the car) but the engine has been fine, no maintanence required, regular 4000 mile oil change intervals with synthetic(I know I could change with longer intervals, but rather play it safe).

  2. #32
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    Adrian is offline Cadillac Owners Member
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  3. #33
    RLLOVETT is offline Cadillac Owners Fanatic
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    Re: 335,000 miles!!

    That's 1k miles/WEEK for 7 years, or about 6 miles/hour for the last 7 years...must be a typo...

  4. #34
    Bubba BC is offline Cadillac Owners Member
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    Re: High Mileage Northstar Thread: Who can beat me?

    I own a 2000 SLS with 145000. It runs perfect except for the normal cold engine knock. It does not use or leak any oil.

  5. #35
    Leloz is offline Cadillac Owners Enthusiast
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    Re: High Mileage Northstar Thread: Who can beat me?

    2000 STS with 97,000.. still runs like new!

  6. #36
    dkozloski's Avatar
    dkozloski is offline Cadillac Owners 10000+ Posts
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    Re: High Mileage Northstar Thread: Who can beat me?

    I saw a 1947 Kenworth truck in 1961 that had 3,500,000 miles on it, nearly all on the Alaska Highway. It averaged almost 700 miles a day on the road and belonged to Lynden Transfer of Washington state. The last I saw of it, it was still going strong.

  7. #37
    chazglenn3's Avatar
    chazglenn3 is offline Cadillac Owners Connoisseur
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    Re: High Mileage Northstar Thread: Who can beat me?

    Bubba;

    You need some wide open throttle blasts to clean out the carbon and get rid of that cold engine noise.

  8. #38
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    Pjs
    Pjs is offline Cadillac Owners Fanatic
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    Re: High Mileage Northstar Thread: Who can beat me?

    I've got a 95 SLS w/ 136K on it. No real problems in the beginning except a wicked oil leak from the oil pan and manifold, something to the tune of 2 qt's a week. But so far I've gone from just replacing the oil pan seal and manifold to having a stripped main bearing bolt hole. I'm in the process of timeserting the block (got 3 holes done last night) and will have to install a new set of rod bearings. Overall the engine looks to be in excellent shape. I'm sure in the next 100K i'll have to do the head gaskets.

  9. #39
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    ljklaiber is offline Cadillac Owners Fanatic
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    Re: High Mileage Northstar Thread: Who can beat me?

    I am now seeing 144 k on my 95 SLS and outside of minor oil leak, it is still very strong. When placed in D2 trans position the line pressure bilds and it leaves like a racecar. Solid shifting I grad 3rd at 6200 and it runs well. I have been told that that change in tranny line pressue and lockup is for towing purposes. Love it for barkin tires.

  10. #40
    mean94eldoetc is offline Cadillac Owners Member
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    Re: High Mileage Northstar Thread: Who can beat me?

    94 eldo ETC here, 149,500 m. later only replaced rss module and window motor. Runnin low 14's with just intake and exhaust. Putting chip in next week to break 112 mph. burns 1.8t's from a dig . and beats later model mustang gt's from a 60 roll. Ran a hemi ram (2wd) last night and had to let off the gas completely twice just to be nice and let em catch up. Teachin friends it aint a granny car is costin alot in premium gas. had the car for a month unhealthily in love with it.

  11. #41
    94 STS is offline Expired eMail Address
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    Re: High Mileage Northstar Thread: Who can beat me?

    1994 STS - 232,000 Miles. Bought it with 65k on it.
    New Crankshaft
    2 Alternators
    2 Water Pumps (Changing it today, taking a break)
    A/C Comp.
    Motor Mounts
    LED Brake Light.
    Passenger heated seat
    Radiator and Tanks
    Starter
    "Blown H-Gasket" Since 143k miles

    Can't kill it.
    Wish I had 10 of em.

    Kelly

  12. #42
    Lance Allison is offline Cadillac Owners Member
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    Re: High Mileage Northstar Thread: Who can beat me?

    I'm not only a Caddy lover, but also an MB diesel and VW TDI fan.

    Check out these numbers on the odometers below.

    1st pic
    87 Mercedes 300SDL (not mine, but a MB forum member)
    One engine rebuild and 2 transmissions, otherwise original and very nice

    2nd pic
    98 VW Jetta TDI (mine)
    Original engine and trans...best car I've owned. Bar none.

    3rd pic
    87 Mercedes 300SDL (mine)
    Original engine, 2nd transmission, original and excellent condition

    Cadillac-wise...
    I had just under 80k miles on my 94 STS (traded in 98), telltale signs of impending head gasket failure and the infamous oil leak

    52k on a 98 Deville, (traded in 2002), small oil leak

    So far so good..., under 25k on 02 Eldo ETC

    Other than that,

    84 Eldorado, Woodland Haze firemist over dark brown leather, bought new, sold @ 12k miles

    85 Eldorado Biarritz, Black over dark red leather, bought new, sold @ 8k miles

    89 Eldorado, light blue with matching 1/2 top and opera lamps over dark blue leather, still have @ 110k miles

    90 Eldorado Biarritz, Sapphire Blue Firemist over dark blue leather, sold @ 95k miles

    90 Sedan Deville, Antelope Firemist over taupe leather, bought new, sold @ 35k miles

    91 Seville, Cottillion white over red leather, sold @ 70k miles

    91 Sedan Deville, Sapphire Blue Firemist over dark blue leather, sold @ 132k miles
    Attached Images

  13. #43
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    kiloks is offline Cadillac Owners Member
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    Re: High Mileage Northstar Thread: Who can beat me?

    alll original baby... a lil over 160 haha but as soon as my baby turns 200 its in for a major high proformence overhaul....
    Attached Images

  14. #44
    cad_90's Avatar
    cad_90 is offline Cadillac Owners Fanatic
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    Re: High Mileage Northstar Thread: Who can beat me?

    Sorry, not a Northstar, but it's a 1988 Sedan Deville with just over 264000 on it. Original everything. Engine was still running fine, but it is off the road because the bottom rusted out.

  15. #45
    chazglenn3's Avatar
    chazglenn3 is offline Cadillac Owners Connoisseur
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    Re: High Mileage Northstar Thread: Who can beat me?

    Wow...264K...powertrain outlasted the body

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