Results 1 to 5 of 5

How do you change the coolant?

This is a discussion on How do you change the coolant? within the General Help forums, part of the LSx Technical Help Section category; How do you change the coolant on a LT1? And where do I bleed the system and what is the ...

  1. #1
    Junior Member
    Join Date
    Sep 2008
    Location
    Tampa,FL
    Posts
    10

    White
    1994 Z28

    How do you change the coolant?

    How do you change the coolant on a LT1? And where do I bleed the system and what is the process fior that? I will do a flush also. For that, I think you pour the flush bottle in the radator and add water. Should I bleed it when I flush it?

  2. #2
    James Bond Spikito's Avatar
    Join Date
    Aug 2007
    Location
    Texas
    Age
    30
    Posts
    4,546

    2001 3.8 Black - sold
    2000 SS Black M6

    Yeah ive been thinking about doing this but i also have no freakin clue

    I almost want to say that if its not running hot dont worry about it, but i wont, im sure its good to clean it out once in awhile

  3. #3
    Your dealership guy konigandy6's Avatar
    Join Date
    Aug 2007
    Location
    Romeo, MI
    Posts
    6,557

    Velocity Yellow
    2008 Corvette Z06

    Your best bet is to take it to a mechanic and have a coolant flush done. That way they can pressurize the system and get all the old coolant out and put the new stuff in. Otherwise you are just scratching the surface of the amount of coolant running around in your engine. Plus, with the flush, it can get out any crystalized coolant that has settled at the bottom of your radiator. Just to give you an idea, my dealer charges $98 for a coolant flush, though I have seen them as high as $150. Obviously it is up to you how you want to tackle this situation, but IMO, I would let someone flush it for me with a flushing machine.

    2008 Z06 - Velocity Yellow - OEM

    2017 Silverado Z71 5.3 - OEM

    2002 Z06 - Electron Blue Metallic - D1 - E85 - 701 rwhp 687 rwtq **sold**

    2002 Z28: M6 NBM - cam and boltons - 396rwhp 357 rwtq **sold**

  4. #4
    Member 346ci's Avatar
    Join Date
    Sep 2007
    Location
    AK
    Age
    27
    Posts
    553

    NBM
    1998 Z-28

    I'm not sure how the LT1 is set up, but on my LS1 I pulled the drain plug on the radiator and the freeze plug out of the block. Then I took a hose hooked up to hot water and flushed water through the radiator cap and upper radiator hose for 5 minutes or so.
    I do not recommend a coolant flush offered at dealerships or lube shops, in my opinion they are a waste of money. The flush machines tend to break loose any gunk in your cooling system and deposit it in the bottom of the radiator. Since a coolant flush is done from above the radiator it doesn't have the capability to "suck" the deposits in the bottom of your radiator out.
    I know this contradicts everything koniandy6 just said, I'm just speaking from my experiences.

  5. #5
    Your dealership guy konigandy6's Avatar
    Join Date
    Aug 2007
    Location
    Romeo, MI
    Posts
    6,557

    Velocity Yellow
    2008 Corvette Z06

    Quote Originally Posted by 346ci View Post
    I'm not sure how the LT1 is set up, but on my LS1 I pulled the drain plug on the radiator and the freeze plug out of the block. Then I took a hose hooked up to hot water and flushed water through the radiator cap and upper radiator hose for 5 minutes or so.
    I do not recommend a coolant flush offered at dealerships or lube shops, in my opinion they are a waste of money. The flush machines tend to break loose any gunk in your cooling system and deposit it in the bottom of the radiator. Since a coolant flush is done from above the radiator it doesn't have the capability to "suck" the deposits in the bottom of your radiator out.
    I know this contradicts everything koniandy6 just said, I'm just speaking from my experiences.
    In most cases the deposits you speak of is actually crystallized coolant or aluminum sulfate. If that is the case, the coolant was flushed out far to late. Most places after flushing the coolant system pop the plug on the bottom of the radiator anyway. It all boils down to personal preference anyway, and what you think is best for your car. My experiences lead me to stick with the flush system.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Coolant Flush / Hose Change
    By pajeff02 in forum GM Trucks
    Replies: 15
    Last Post: 07-01-2012, 08:53 AM
  2. Change Coolant 3.8V6
    By pv-camaro in forum V6
    Replies: 9
    Last Post: 03-05-2012, 04:58 PM
  3. Question: Coolant and hose change
    By pajeff02 in forum Firebird / WS6
    Replies: 4
    Last Post: 02-24-2009, 08:46 AM
  4. Coolant change
    By jroc in forum External Engine
    Replies: 1
    Last Post: 06-24-2007, 05:06 PM
  5. ls6 intake coolant plugs or extra front coolant pipe?
    By mikes ss in forum External Engine
    Replies: 3
    Last Post: 12-03-2005, 05:13 PM

Bookmarks

Posting Permissions

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