GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Page 2 of 2 FirstFirst 12
Results 11 to 19 of 19
  1. #11
    Legend
    murdog94's Avatar
    Join Date
    Feb 2008
    Location
    Cloquet, Minnesota, United States
    Posts
    8,198
    Blog Entries
    12

    Default

    I never had a problem with it in my newer Chevys and a bunch of my buddies have it to. But then again most of us up here change our coolant a bit more often since you want good stuff when it is -40 degrees.. But good to know that it causes problems.
    Mike

    Currently

    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

    2009 Saturn Aura XE (wifes car)

    2011 F-150 Crew 4X4

    "Hold it to the floor till you see God.... Then Brake!!!!"

  2. #12
    Master Mechanic rustyk2's Avatar
    Join Date
    Mar 2010
    Location
    South Carolina
    Posts
    934

    Default

    The reason I changed to multi-color coolant was my heater core was blocked SOLID. I don't want to lose my engine due to coolant
    Dana South Carolina

    1986 V20 Suburban
    1988 V20 Suburban
    1995 Camaro convertable
    2003 Trailblazer LT
    :sign0196::wink2:

  3. #13
    Legend

    Join Date
    Aug 2008
    Location
    East of Branson, Missouri
    Posts
    2,788
    Blog Entries
    14

    Default

    I didn't read everything thoroughly so I'm not sure if I'm hitting the nail on the head or if it's been said already but I've been told that dex-cool is not the greatest for vehicles more than a few years old and that it causes more problems in the long run. I've been told that replacing the entire coolant to the green stuff is preferable. Never mix the two, of course. There is a third option that claims it 'works with both kinds' of coolant - I don't know about it, haven't ever tried it and haven't read any reviews on it.

    just FYI as I pass through!
    Steven



    "The Sarge"
    1999 Chevy Suburban LT- K2500
    7.4 454 Vortec, 4WD
    305/70/16 on Eagle Alloy




  4. #14

    Default

    My wfe's 99 Lesabre had it and it ate up the intake gaskets and left sludge all over. Same for my mother's 03 Lesabre. Only around 50K miles here:





    I flushed it out and filled with green but the damage was already done by the time I did those gaskets. Not long after, the timing cover gasket started to leak, lol.

    Not long after buying my truck at 70K miles, the waterpump gaskets started to seep. Fixed that and flushed the hell out of the system, then filled with green coolant.

  5. #15

    Default

    Is this still a problem w/ 2005 & up?

    My '05 Silverado and the wife's new to us '06 Impala have dexcool in them. I bought compatable fluid for top off but will consider a good flush and switch to good old green if I need to...

    My '99 Grand Am ate the intake @ 50K and we switched to green coolant and it went to 170,000 b/4 my daughter cracked a head. Replaced it w/ a low mileage JY takeout w/ green. I figured that GM would have 'cured' this by now...
    Still Loyal to GM after all these years...:shocked:
    2006 Impala LT 3.5L
    2005 Silverado WT small cab/longbed 4x4 4.3L V6
    1999 Grand Am 3.4L in TX w/ our youngest
    1993 GMC Jimmy 4.3L 4 door 4x4 'Ole Rusty' - 'SOLD'
    1988 S-10 small cab/longbed HT3.4L Crate Engine
    1970 Nova 250 I-6, factory 3 sp floor shifter.
    1968 Chevelle 'Nomad' Wagon 250 I-6 w/ 3 on da' tree.

  6. #16
    Legend
    murdog94's Avatar
    Join Date
    Feb 2008
    Location
    Cloquet, Minnesota, United States
    Posts
    8,198
    Blog Entries
    12

    Default

    05 up still use the same blend.. I guess I after seeing all the negatives, I would consider a change.. Just keep an eye on it since the point of Dexcool is the keep elctolosys (spelling) from destroying aluminum heads and components.
    Mike

    Currently

    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

    2009 Saturn Aura XE (wifes car)

    2011 F-150 Crew 4X4

    "Hold it to the floor till you see God.... Then Brake!!!!"

  7. #17
    Master Mechanic rustyk2's Avatar
    Join Date
    Mar 2010
    Location
    South Carolina
    Posts
    934

    Default

    As I stated earlier, the multi-use coolant is a good option, however flushing before is recommended. I flushed my 95 camaro, but still use the multi-color, just in case there was some residue left behind. I know I have some sludge build up, not sure how remove it.
    Dana South Carolina

    1986 V20 Suburban
    1988 V20 Suburban
    1995 Camaro convertable
    2003 Trailblazer LT
    :sign0196::wink2:

  8. #18

    Question

    Has anyone tried Prestone "Prime" ?
    Happy 2 Wheeler!

  9. #19
    Master Mechanic Dr_Zero's Avatar
    Join Date
    Mar 2006
    Location
    Sunny Florida
    Posts
    706

    Default

    Quote Originally Posted by FireRed View Post
    Has anyone tried Prestone "Prime" ?
    http://www.imcool.com/articles/antif...ant/index.html

    try here

    and here

    http://www.newsomoilcompany.com/Antifreezetest.htm
    My trucks!

    1996 GMC Suburban SLT
    1997 GMC Yukon SLT

Page 2 of 2 FirstFirst 12

Similar Threads

  1. Dexcool delete
    By TJbear in forum General Chevy & GM Tech Questions
    Replies: 1
    Last Post: 10-26-2009, 09:16 AM
  2. Does a 1991 V6 4.3L require Dexcool?
    By KAHruzer in forum Chevy C/K Truck Forum
    Replies: 1
    Last Post: 10-21-2009, 01:26 PM
  3. Dexcool Question
    By mjlatheo@cox.net in forum General Chevy & GM Tech Questions
    Replies: 3
    Last Post: 09-06-2009, 12:14 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •