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Cadillac DeVille



  • dispencer1dispencer1 Posts: 489
    That's OK - When you have to resort to name calling during what should be a discussion on cars, not perceptions of whether in your opinion one is a "cheapskate" because he puts regular gas in a car (since 2000) that is supposed to run on regular, then I'll bow out of this list. Adios.
  • nvbankernvbanker Posts: 7,285
    Didn't mean to offend - just having a discussion.
  • bolivarbolivar Posts: 2,316
    Are you aware that Cadillacs starting in model year 2000 (maybe 2001?) are designed to run on regular gasoline?
  • imidazol97imidazol97 Crossroads of America: I70 & I75Posts: 18,048
    What does this abbreviation mean please?
  • patpat Posts: 10,421
    Your Mileage May Vary

  • sls002sls002 Posts: 2,788
    My owners manual states the following (2002 SLS):
    minimum octane should be 87. For full performance, higher octane fuel may be used. For towing, higher octane is recomended.

    So, yes one can used 87 octane (regular is 85 octane here). But to get the full 275 horsepower and 300 lb-ft of torque, premium fuel is probably needed. However, if you all are getting plenty of power from regular, why spend more? I am averaging about 24-26 in local driving, which is a mix of highway and city. Later this summer I plan to make a long trip to the west coast.

    Anyone planning to experiment with regular and premium for fuel consumption differences probably should fill alternatly with each type several times keeping track of the mileage. If you used the on board computer (DIC), you should reset for each tankfull. Or else use the fuel used to compute the mileage.

    Then one can use a statistical program to compute the statistical significance of the differences (if any). MRPP is a useful set of programs to do this (MultResponse Permutation Procedures for the uninitiated).
  • nvbankernvbanker Posts: 7,285
    as my friends 2000 specifies Premium fuel.
  • sls002sls002 Posts: 2,788
    The northstar was re-engineered for model year 2000. But I don't really know when they reduced the recommended octane to 87 (not regular but 87). The current northstar web site lists 87 for the FWD's but the VVT recommends premium (10.5:1 compression).
  • lemkolemko Posts: 15,120 all my Cadillacs all the way back to my 1975 Sedan DeVille. I currently own a 2002 Seville STS. You can use 87 octane, but I prefer Sunoco 94 Ultra. It's like you can eat at McDonald's but prefer to dine at a far more upscale establishment.
  • sls002sls002 Posts: 2,788
    I have experimented with a tank of regular (85 octane). There should have been enough premium left to give a mix that was between 86 and 87 octane. I did not see a significant difference in MPG. However, I did notice a slight difference in performance. The difference was, with A/C on and under hard acceleration, during upshifts, there was a slight hesitation with regular that is not there with premium.
  • Hey. I normally post on the Olds, Aurora forum and have always gotten great responce over there as an Aurora owner.

    My wife wants a Deville and we have been looking at 2000 and 2001's. We can get them pretty cheap out here on the west coast and with some pretty low mileage.

    I would appreciate your input on these cars. The good and the ugly. What kind of long term mileage you can expect that kind of thing. Major repair issues.

  • nvbankernvbanker Posts: 7,285
    I don't like FWD cars generally, and so have stayed away from this very powerful car because of the exaggerated torque steer. But, if you need FWD, or it doesn't bother you, these are good cars, IMO. No reason they shouldn't give you 150,000 miles of fairly trouble free service. Issues of note are oil leaks, fairly common at around 60,000 miles. Fairly expensive to fix too. Also, if your starter goes out, it's in the engine valley and the intake manifold has to be removed to get at it. Also, in that vintage, the Northstar engine tends to carbonize after a while, requiring a "decarbonization" treatment that the dealer gets too much for. I've been told, but don't like this solution, that if you don't burn premium gas in them, they won't carbon up. I wouldn't take that to the bank though.

    The best part of these sleds is that they depreciate like a rock in the first 3 years, so finding a great car for a song is very possible.

    Good luck!
  • dispencer1dispencer1 Posts: 489
    Try and get one under 4 years old and 50k mileage so you will get a break on an extended warranty. I wouldn't dream of having any car without a 100,000 miles 0 deductible 6 year warranty especially a Cadillac. When the warranty is gone so is the car. The 2001 model had leather standard and the 2002 had the most standard equipment including an electrochromatic (self dimming) outside side mirror and power adjustable seat belts. These were gone by 2003. Each year something standard seems to disappear. Expect great highway mileage (30-31) and terrible city mileage (14-16). This car is a road car. The dreaded torque steering problem with FWD means very little to someone like me who is used to driving FWD cars. I just drive them normally and they seem to drive normally. Perhaps if I drove a Lincoln and then my Cadillac I would know what these people are talking about. Good luck on the Cadillac purchase. These are great cars - ride well and get as good mileage on the road as a Camry (probably better). Plenty of power to keep from constantly downshifting on cruise everytime you go up a hill (like my '98 Silhouette). I have a base model 2003 Deville (ex-Alamo rental car) and like it very much. I'd get the extended warranty though. I made sure mine was 'certified" with the protection plan for 100k miles.
  • dispencer1dispencer1 Posts: 489
    What did you finally buy?
  • sls002sls002 Posts: 2,788
    I have not found that GM's full size FWD cars have much torque steer. My 83 Buick Skyhawk did have a lot of torque steer.

    As far as fuel consumpution goes, I get over 20 MPG in local driving (around 25 actually), but most of my driving is part highway. How bad your gas mileage gets will depend on how short your local trips are with a cold start up. Even in winter (temperature around 15 F), when I still lived in town, I got 18 MPG.

    The big thing to watch for is coolant leaks. A leak in the wrong place will cause corrosion which may require an engine replacement if it goes on too long.
  • nvbankernvbanker Posts: 7,285
    THAT's encouraging! I don't want to have to worry about that all the time.

    I guess torque steer is what you're used to. My Infiniti doesn't have severe torque steer, but you can sure tell it's FWD just with the differences in road surfaces as you accelerate, which is what I'm objecting to, given the choice. The DeVilles/Sevilles I've driven in recent years are smooth enough, but when you goose it, particularly making a turn in an intersection, you sure feel it.
  • sls002sls002 Posts: 2,788
    Well, one does get some indication that the power is moving through the wheels that also steer. But my Skyhawk (4 cylinders) would spin the steering wheel if you did not grip it hard, when on wheel was on slippery surface and the other had plenty of traction. I have never noticed any tendency like this with the full size FWD's.

    The new STS with RWD should be a much more satisfactory car for handling.
  • frmofrmo Posts: 4
    We have a 1990 DeVille. We are experiencing problems with the door locks and recently have had trouble turning the car off.
    Doors - key fits but is extremely difficult to turn. We have tried to replace the cylinders and locks - no luck. This happens in both doors.
    Ignition - Intermittantly, you have to jiggle, push, pull, stand on, wait 20 minutes and try again - response varies before you can turn the key to turn the ignition off. Have never had trouble turning it on. Can these problems be related?
    The car was given to us by my in-laws. One person owner. He had problems with the locks and no one was able to find the solution for him either. My son will start driving this soon and I want him to be able to lock the car - or I fear it will be stolen.
    Any suggestions are appreciated.
  • nvbankernvbanker Posts: 7,285
    Your key is worn down. Hopefully you have another less worn key around that you can use and copy. If not, perhaps an old, experienced, and skilled locksmith can fashion one for you. That's all it is, and it's pretty common with GM keys. Don't know why. My niece has an 01 Saturn that this has happened to already! Fortunately, she had an unused key put away. Solved all the problems.
  • frmofrmo Posts: 4
    Hadn't though of that. We will check this out. We do have several sets but they may have all been made from the same worn out key. Why would it be easy to start the car but hard to turn it off? Also, you have to hand unlock each door, power system doesn't work and replacing parts has not changed that.
    I was fearing electrical, but will explore the key fit first.
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