Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Can I switch my coolant to the green stuff?

Thread Tools
 
Search this Thread
 
Old Oct 11, 2004 | 06:46 PM
  #1  
demonspeed's Avatar
Thread Starter
It's not mine! woo hoo!
20 Year Member
Photogenic
Photoriffic
iTrader: (7)
 
Joined: Jun 2003
Posts: 7,128
Likes: 5
From: Pittsburgh, PA
Default Can I switch my coolant to the green stuff?

I pulled my overflow cap to find a bunch of nasty brown sludge on the plastic/rubber stick thingy. So i'm going to flush the system and put some new coolant in.

Do I need to run the orange Dexcool or can I swtich to green once I get it all flushed out?

I've heard the Dexcool starts to crystalize after time, is that true?
Reply
Old Oct 11, 2004 | 07:06 PM
  #2  
LSUxBlake's Avatar
TECH Fanatic
iTrader: (3)
 
Joined: Jun 2004
Posts: 1,109
Likes: 0
From: Baton Rouge, LA
Default

I know Prestone's new coolant works in place of both Green and Dexcool, maybe you should try that. It's available at Autozone for 8.99.
Reply
Old Oct 11, 2004 | 07:21 PM
  #3  
demonspeed's Avatar
Thread Starter
It's not mine! woo hoo!
20 Year Member
Photogenic
Photoriffic
iTrader: (7)
 
Joined: Jun 2003
Posts: 7,128
Likes: 5
From: Pittsburgh, PA
Default

Originally Posted by LSUxBlake
I know Prestone's new coolant works in place of both Green and Dexcool, maybe you should try that. It's available at Autozone for 8.99.
The guys at Valvoline owe me a favor, so they're going to do it there on their machine. So I guess I'll be going with the Zerex (I think that's the Valvoline brand). They seemed to think you couldn't use the green stuff in aluminum engine... I didn't know why it would matter.

Last edited by DMNSPD; Oct 11, 2004 at 07:33 PM.
Reply
Old Oct 11, 2004 | 07:26 PM
  #4  
Squintz Palladoris's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2003
Posts: 1,252
Likes: 0
From: Fayettenam, North Cakalki
Default

Originally Posted by LSUxBlake
I know Prestone's new coolant works in place of both Green and Dexcool, maybe you should try that. It's available at Autozone for 8.99.
no one around here has any dexcool. They stocked it a month ago.
I found this stuff and used it on a friends car this weekend when I did his H/C install.

The dexcool had crystalised around the thermostat housing. Looked like candy.

Brad
Reply
Old Oct 11, 2004 | 07:42 PM
  #5  
TAQuickness's Avatar
TECH Junkie
iTrader: (28)
 
Joined: Jan 2004
Posts: 3,250
Likes: 1
From: Houston
Default

Originally Posted by DMNSPD
The guys at Valvoline owe me a favor, so they're going to do it there on their machine. So I guess I'll be going with the Zerex (I think that's the Valvoline brand). They seemed to think you couldn't use the green stuff in aluminum engine... I didn't know why it would matter.

I'm not sure of the proper flushing and filling procedure for our cars, but every japanese aluminum engine i've ever owned in my life worked fine on the green stuff. I don't see why the green stuff would be bad for an LS1, but I didn't engineer the motors either.... $0.02
Reply
Old Oct 11, 2004 | 09:04 PM
  #6  
fast98's Avatar
TECH Regular
20 Year Member
iTrader: (16)
 
Joined: Jun 2004
Posts: 483
Likes: 0
From: michigan
Default

i have the green stuff in mine, its been in for 5 months, no problems. just as long as u don't mix the 2 you are fine
Reply
Old Oct 11, 2004 | 09:23 PM
  #7  
CamTom12's Avatar
12 Second Club
iTrader: (1)
 
Joined: Apr 2004
Posts: 1,369
Likes: 0
From: Clarksville, TN
Default

The dexcool is supposed to work better with the aluminum and make less of a mess as far as chemical reaction buildups are concerned. I'd bet money that it's really not that big of a deal, I had a Japanese aluminum engine for a while that ran green stuff. Worked great for 120K or so before I sold it and was still running great before the kid that bought it wrecked it.
Reply
Old Oct 11, 2004 | 10:01 PM
  #8  
DSG's Avatar
DSG
10 Second Club
iTrader: (1)
 
Joined: Jul 2003
Posts: 568
Likes: 0
From: St Petersburg, Fl
Default

I have ran the green stuff for over 2 1/2 years with no problems at all. My car has a 160 thermostat and the temp never gets over 185degrees.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Oct 12, 2004 | 02:03 AM
  #9  
Tom@SpeedInc's Avatar
Banned
iTrader: (5)
 
Joined: Apr 2003
Posts: 1,890
Likes: 0
From: Chicago
Default

I'd get toyota red coolant, green coolant and dexcrap are worthless. Green coolant is ok but it turns acidic within a year. Toyota red coolant is awsome, never have sludging problems with it. Could even try toyota extended long life coolant the pink stuff that is pre mixed.
Reply
Old Oct 12, 2004 | 07:23 AM
  #10  
demonspeed's Avatar
Thread Starter
It's not mine! woo hoo!
20 Year Member
Photogenic
Photoriffic
iTrader: (7)
 
Joined: Jun 2003
Posts: 7,128
Likes: 5
From: Pittsburgh, PA
Default

Thanks for the replies everyone.

I just had a thought... I am planning on selling my car in the spring once prices go back up (I'm attempting self employment - woohoo!) so I think it might just be easier on the next owner if I left the dexcool in there. Oh well.

Thanks again!
Reply




All times are GMT -5. The time now is 03:53 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE