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Cadillac Seville / Cadillac Eldorado Forum Discussion, 99 seville 100% tranny life since day one in Past Cadillac Vehicle Discussion; We SLS owners engage in spirited driving, too. I think that the parameters changed between earlier and later Caddys. That's ...
  1. #46
    El Dobro's Avatar
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    Re: 99 seville 100% tranny life since day one

    We SLS owners engage in spirited driving, too. I think that the parameters changed between earlier and later Caddys. That's why the reading doesn't move. You probably have to set the trans on fire to get the reading to change.

  2. #47
    deville555 is offline Cadillac Owners Member
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    Re: 99 seville 100% tranny life since day one

    Quote Originally Posted by El Dobro View Post
    If the counter doesn't move after you put 100,000 on the car, just change the filter and fluid and be done with it. Since I never buy new, I change it when I get the car to be on the safe side. After all, what is the life of a car? I've seen 'em with over 100,000 on the clock and they're like new and I've also seen them with 30,000 and they look like they were used in the Battle of the Bulge.
    People say change it a 30,000 because most ATF last 100,000 miles only at 170 degrees F and for every 20 below that and 10 degrees above 170 ATF last only have that. Most any car will not have a transmission cooler (thatís part of the reason why some people in racing will run a cooler line) and it runs at engine temperature which is around 195 degrees so that would make it approximately a 30,000 service. This is why towing will cause the ATF to break down faster and is recommended to change it at shorter intervals because the transmission components heat up the ATF.

  3. #48
    Lac_Cruising's Avatar
    Lac_Cruising is offline Cadillac Owners Fanatic
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    Re: 99 seville 100% tranny life since day one

    In my 95 SLS it had 110,000 miles on it when I brought it. No fluid change on the transmission till it told me too which was around 150,000 miles. The DIC said change trans fluid. I eventually changed it but I never had a problem with the fluid again and now I'm at 165,000 miles.

  4. #49
    Murphyg's Avatar
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    Re: 99 seville 100% tranny life since day one

    Quote Originally Posted by deville555 View Post
    .............................Most any car will not have a transmission cooler (thatís part of the reason why some people in racing will run a cooler line)...........................
    My 94 V6 Dodge Spirit had one.
    But maybe would explain why the tranny shop couldnt figure out why the transmission kept goin. Kept fryin selinoids.
    Turned out the trans coolant line was plugged.

    Youd think they would have known though.

    Come to think of it. My wifes 94 Taurus also had it too.
    Remember when the trans coolant line started leaking. Had to do a band aid fix on it to get it from A to B. Ended up leaving it the way we fixed it. Lasted till we dumped the car.

    Im guessing that alot more vehicles may have them than you may think.

  5. #50
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    Re: 99 seville 100% tranny life since day one

    is it "bring back dead threads" week...?

  6. #51
    Murphyg's Avatar
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    Re: 99 seville 100% tranny life since day one

    Holly cow I didnt see that.
    And to think that just 7 more days and it will be officially 2 years since it ended.
    Gotta get some Lotto ticks with these #s lol

  7. #52
    boxhalr188 is offline Cadillac Owners Member
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    Re: 99 seville 100% tranny life since day one

    I can pull up the oil life left percentage . but haven't seen any thing on the transmission, how do you do that? '98 Eldorado ESC. Thanks.

  8. #53
    El Dobro's Avatar
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    Re: 99 seville 100% tranny life since day one

    Quote Originally Posted by Murphyg View Post
    Holly cow I didnt see that.
    And to think that just 7 more days and it will be officially 2 years since it ended.
    Gotta get some Lotto ticks with these #s lol
    Yea, and I was the last poster before this thread went to sleep. I'll be going on 116,000 miles on my Seville and the counter is still at 100%.

  9. #54
    El Dobro's Avatar
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    Re: 99 seville 100% tranny life since day one

    Quote Originally Posted by boxhalr188 View Post
    I can pull up the oil life left percentage . but haven't seen any thing on the transmission, how do you do that? '98 Eldorado ESC. Thanks.
    If you still have diagnostics built in, you may find it in there. The '98+ Seville has a different cluster that has information that scrolls up or down. It's in there.

  10. #55
    smagnotta is offline Cadillac Owners Member
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    Re: 99 seville 100% tranny life since day one

    I just wanted to post my experience with the tranny fluid issue. I have a 99 Seville STS, 80,000 miles in it, and the tranny fluid life monitor is still at 100%. So I take it to the mechanic and tell him to check it and clean it if needed (among other things the car needed). I call back and he said it needed flushed out. After he did it, I checked it and the fluid looks cleaner than before. I think after that many miles one should change the tranny fluid. It's more of a preventative maintenance issue for me.

  11. #56
    SliceOfLife is offline Cadillac Owners Enthusiast
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    Re: 99 seville 100% tranny life since day one

    Quote Originally Posted by El Dobro View Post
    Yea, and I was the last poster before this thread went to sleep. I'll be going on 116,000 miles on my Seville and the counter is still at 100%.
    My 02 SLS had 128,760 mi on it when I bought it recently, tranny life 99%.

  12. #57
    SliceOfLife is offline Cadillac Owners Enthusiast
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    Re: 99 seville 100% tranny life since day one

    Quote Originally Posted by El Dobro View Post
    We SLS owners engage in spirited driving, too. I think that the parameters changed between earlier and later Caddys. That's why the reading doesn't move. You probably have to set the trans on fire to get the reading to change.
    When I bought my 02 SLS it had 128000 on it and the life was at 99%. Supposedly it had just had a flush.

  13. #58
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    Re: 99 seville 100% tranny life since day one

    The percentage won't change unless you overheat it.

  14. #59
    SliceOfLife is offline Cadillac Owners Enthusiast
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    Re: 99 seville 100% tranny life since day one

    Quote Originally Posted by Ranger View Post
    The percentage won't change unless you overheat it.
    Might it overheat due to a failed water pump/blown head gasket? If the radiator core temperature rose to high, that might interfere with transmission oil cooling.

  15. #60
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    Re: 99 seville 100% tranny life since day one

    Might warm it up a bit more than normal, but I would not think it would overheat it like trailer towing.

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