OIL - I am old and ignorant, so please help me make sure of something.
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 7 of 7
Cadillac Seville / Cadillac Eldorado Forum Discussion, OIL - I am old and ignorant, so please help me make sure of something. in Past Cadillac Vehicle Discussion; As I have read and tried to understand the different arguments in older threads and the technical archives about oil ...
  1. #1
    SissyBoyFloyd's Avatar
    SissyBoyFloyd is offline Cadillac Owners Member
    Automobile(s): 99 Eldorado ETC
    Join Date
    Jun 2013
    Location
    North of San Diego
    Age
    65
    Posts
    47

    OIL - I am old and ignorant, so please help me make sure of something.

    As I have read and tried to understand the different arguments in older threads and the technical archives about oil changes for the Northstar engine in the '99 Eldorado ETC, I want to make sure I understand it correctly.

    I take it that there is no need to change your oil before the info center tells you to, and that using synthetic oil is an absolute waste of money. Also, that it is natural for the engine to use oil and for you to have to add a fresh quart every so often in between oil changes. Now do I have that all correct? Or am I missing anything? I also assume one should change the oil filter at each oil change, or am I wrong on this one?


    PS. Since I just bought the car and don't know when the oil was changed last, should I just trust the current reading of the info display which says 85% still.

    Thx all.

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    vincentm's Avatar
    vincentm is offline Cadillac Owners Connoisseur
    Automobile(s): 1997 Cadillac Eldorado ETC
    Join Date
    Aug 2010
    Location
    Kennewick WA
    Age
    36
    Posts
    4,709

    Re: OIL - I am old and ignorant, so please help me make sure of something.

    No need for synthetic, stick to what your manual and oil cap tell you. i change my oil every 3 months, regardless if i drive it everyday or not. And as a rule of thumb i change oil and coolant when getting a used vehicle, i'm picky like that.

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    73,887

    Re: OIL - I am old and ignorant, so please help me make sure of something.

    You are correct on all counts Floyd.

  5. #4
    EcSTSatic's Avatar
    EcSTSatic is offline Cadillac Owners Connoisseur
    Automobile(s): 1999 STS - diamond white
    Join Date
    Dec 2004
    Location
    Wichita, KS
    Posts
    4,679

    Re: OIL - I am old and ignorant, so please help me make sure of something.

    Stick with the manual specs and OLM periods. I would not change it any sooner. Synthetic might save some gas, but unless you ignore the OLM and extend the oil change periods, that savings is used up in the extra cost of synthetic. That's my $.02. Basically, you have it correct.
    The PO might have reset the OLM to make it look like it was changed recently. It should look pretty clean at 85%. If it is, I would consider it accurate.

  6. #5
    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
    Automobile(s): Crimson 2001 Seville STS, 1990 Seville (RIP)
    Join Date
    Sep 2010
    Location
    East Boston MA.
    Age
    26
    Posts
    21,945
    Quote Originally Posted by SissyBoyFloyd
    I take it that there is no need to change your oil before the info center tells you to, and that using synthetic oil is an absolute waste of money. Also, that it is natural for the engine to use oil and for you to have to add a fresh quart every so often in between oil changes. Now do I have that all correct? Or am I missing anything? I also assume one should change the oil filter at each oil change, or am I wrong on this one?
    You are 100% correct on all points.

    A note on the OLM, replace the oil when it reaches 0%, but no longer than 12 months.

    PS. Since I just bought the car and don't know when the oil was changed last, should I just trust the current reading of the info display which says 85% still.
    I would definitely change it.

    Your engine uses 10W-30, 7.5 quarts with an oil and filter change. Correct level on the dipstick is half way up the hashmarks (xxxxxXxxxxx).

    ----------

    Quote Originally Posted by EcSTSatic
    Synthetic might save some gas,
    Using synthetic makes absolutely zero difference in gas mileage.

  7. #6
    dou1t2 is offline Cadillac Owners Member
    Automobile(s): 96 Seville SLS and 99 Eldorado ESC,also 91 F-150 and a 73 MG
    Join Date
    Aug 2010
    Location
    NE Orygun
    Age
    57
    Posts
    80

    Re: OIL - I am old and ignorant, so please help me make sure of something.

    I'm with vincentm on changing oil when buying a used vehicle. I suppose that someone could reset the oil life setting without actually changing the oil, thus misleading someone, although the oil when checked would be darker than a recent oil change would appear. my 2 sense!

  8. #7
    basscatt's Avatar
    basscatt is online now Cadillac Owners 10000+ Posts
    Automobile(s): 89 Coupe DeVille, 95 Sedan DeVille, 03 SLS, two 02 DHS's
    Join Date
    Feb 2004
    Location
    Minnesota
    Age
    63
    Posts
    10,090

    Re: OIL - I am old and ignorant, so please help me make sure of something.

    Quote Originally Posted by SissyBoyFloyd View Post
    As I have read and tried to understand the different arguments in older threads and the technical archives about oil changes for the Northstar engine in the '99 Eldorado ETC, I want to make sure I understand it correctly.

    I take it that there is no need to change your oil before the info center tells you to, and that using synthetic oil is an absolute waste of money. Also, that it is natural for the engine to use oil and for you to have to add a fresh quart every so often in between oil changes. Now do I have that all correct? Or am I missing anything? I also assume one should change the oil filter at each oil change, or am I wrong on this one?


    PS. Since I just bought the car and don't know when the oil was changed last, should I just trust the current reading of the info display which says 85% still.

    Thx all.
    --------------------------------
    I agree with Ranger - and MC -

    you are 100% CORRECT on all points -

    however - if you don't put many miles on the car -
    change the oil once a year -

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting