Is there an easy way to change coolant?
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
Page 1 of 3 1 2 3 LastLast
Results 1 to 15 of 32
Northstar Engines and System Technical Discussion Discussion, Is there an easy way to change coolant? in Cadillac Engine Technical Discussion; what would you sugjest is the easiest way to do it? remove lower hose & let drain? drain radiater? does ...
  1. #1
    limoguy is offline Cadillac Owners Fanatic
    Automobile(s): 98 Deville Delegence
    Join Date
    Oct 2007
    Location
    Long Island, NY
    Posts
    198

    Is there an easy way to change coolant?

    what would you sugjest is the easiest way to do it?
    remove lower hose & let drain?
    drain radiater?
    does it really matter what brand of coolant is used?
    dont they all do the same?
    thank you

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    Cadillacboy's Avatar
    Cadillacboy is offline Cadillac Owners Connoisseur
    Automobile(s): 1996 Cadillac Fleetwood Brougham
    Join Date
    Dec 2003
    Age
    33
    Posts
    4,188

    Re: Is there an easy way to change coolant?

    Easiest way ? I think unplugging the drain plug lol

  4. #3
    limoguy is offline Cadillac Owners Fanatic
    Automobile(s): 98 Deville Delegence
    Join Date
    Oct 2007
    Location
    Long Island, NY
    Posts
    198

    Re: Is there an easy way to change coolant?

    drainplug on the radiater?
    will that drain it all out?

  5. #4
    Cadillacboy's Avatar
    Cadillacboy is offline Cadillac Owners Connoisseur
    Automobile(s): 1996 Cadillac Fleetwood Brougham
    Join Date
    Dec 2003
    Age
    33
    Posts
    4,188

    Re: Is there an easy way to change coolant?

    It should be somewhere under the rad . Still, it might not drain it all out and this is when you can need flushing the cooling system

  6. #5
    JimD is offline Cadillac Owners Connoisseur
    Automobile(s): '98 STS (RIP @ 206,xxx), '04 DTS & the witch driver gone.
    Join Date
    Sep 2003
    Location
    Atlanta area
    Posts
    4,686

    Re: Is there an easy way to change coolant?

    Drain as much as possible and refill with GM approved (licensed) Dex-Cool mixed at 50/50 with distilled water. Approved vendors are permitted to say Dex-Cool on the container; Havoline and Prestone are two such vendors.

    Pulling the inlet and outlet hoses will drain about 4 quarts. Some models have a drain valve at the left side of the radiator. Using a little air pressure will force a little more out.

    Catch the old coolant in a container as much as possible. The corrosion inhibitor package is acid based and potentially painfully fatal to small animals. Then there is the contamination of the ground water system if you let the old stuff hit the ground and go wherever gravity takes it.

    I would not use any "flush" technique on my cooling system. Using a "flush" product from the aftermarket introduces who-knows-what chemicals into the system. Not for me. And, water flushing is guaranteed to lose control of the desired 50/50 mix ratio.

    Back to the top; drain as much as possible and refill.

  7. #6
    codewize's Avatar
    codewize is offline Cadillac Owners Master
    Automobile(s): 1991 d'Elegance / 2001 DTS / 2002 DTS
    Join Date
    Apr 2005
    Location
    Upstate NY
    Posts
    6,671

    Re: Is there an easy way to change coolant?

    Here we go again.

    There is no lower hose. it's in the middle of the tank. DO NOT FLUSH

    There's a drain plug on the bottom of the radiator. Pull that and you'll get about half the total coolant out. That's all you need.

    Put 4 GM seal tabs in the upper hose. Refill with a 50/50 mix of Dex and Distilled water.

    This is NOT by any means a difficult or long procedure.
    Ownership:
    91 d'Elegance 350
    02 DTS
    01 DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  8. #7
    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
    72,312

    Re: Is there an easy way to change coolant?

    The radiator has a drain plug for a reason. It is the lowest point in the system. Drain it there to get the maximum amount of coolant out.

  9. #8
    limoguy is offline Cadillac Owners Fanatic
    Automobile(s): 98 Deville Delegence
    Join Date
    Oct 2007
    Location
    Long Island, NY
    Posts
    198

    Re: Is there an easy way to change coolant?

    thanks everyone..I apreciate the help

  10. #9
    CadillacSTS42005's Avatar
    CadillacSTS42005 is offline Banned
    Automobile(s): 2005 STS4 1SG: GM Acc Lights, Corsa, Platnium Grille, Volant
    Join Date
    Oct 2005
    Posts
    15,992

    Re: Is there an easy way to change coolant?

    this was like just covered two days ago lol

  11. #10
    limoguy is offline Cadillac Owners Fanatic
    Automobile(s): 98 Deville Delegence
    Join Date
    Oct 2007
    Location
    Long Island, NY
    Posts
    198

    Re: Is there an easy way to change coolant?

    thats why theres erases on pencils, cadillac. maybe you are perfect, i guess

  12. #11
    limoguy is offline Cadillac Owners Fanatic
    Automobile(s): 98 Deville Delegence
    Join Date
    Oct 2007
    Location
    Long Island, NY
    Posts
    198

    Re: Is there an easy way to change coolant?

    cant find the drain plug!!

  13. #12
    dkozloski's Avatar
    dkozloski is offline Cadillac Owners 10000+ Posts
    Automobile(s): 2006 STS V8 AWD, '95 Ford Ranger
    Join Date
    Jul 2004
    Location
    Fairbanks, Ak
    Age
    74
    Posts
    26,407

    Re: Is there an easy way to change coolant?

    Take it to the dealer.
    Don't mess with Binky Bear!


  14. #13
    limoguy is offline Cadillac Owners Fanatic
    Automobile(s): 98 Deville Delegence
    Join Date
    Oct 2007
    Location
    Long Island, NY
    Posts
    198

    Re: Is there an easy way to change coolant?

    thats the last resort..ill ask someone at the auto parts store first..i alreay have all the stuff to do it

  15. #14
    dkozloski's Avatar
    dkozloski is offline Cadillac Owners 10000+ Posts
    Automobile(s): 2006 STS V8 AWD, '95 Ford Ranger
    Join Date
    Jul 2004
    Location
    Fairbanks, Ak
    Age
    74
    Posts
    26,407

    Re: Is there an easy way to change coolant?

    Do some searches on the forum before you give up. This subject has to have been covered a hundred times.
    Don't mess with Binky Bear!


  16. #15
    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
    72,312

    Re: Is there an easy way to change coolant?

    There should be a hole in the splash shield right below it. Get a 3/4" dowel rod and cut a slot in the end of it. Use that as a key to turn the plug. The other alternative is to pull the splash shield. That should be relatively easy. Once you see where it is and how to open it, the next time will be a cinch.

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