1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

How often to replace green coolant

Thread Tools
 
Search this Thread
 
Old 03-13-2011, 01:49 PM
  #1  
Senior Member
Certified GM nut
Thread Starter
 
SignOfZeta's Avatar
 
Join Date: Mar 2005
Location: New Milford, CT
Posts: 2,284
Received 17 Likes on 14 Posts
SignOfZeta has a spectacular aura aboutSignOfZeta has a spectacular aura about
Default How often to replace green coolant

How often should I be flushing the green coolant from my radiator? I've heard 2 years/12,000 miles, 2 years/15,000 miles, and 2 years/30,000 miles.

In the past, ever since I flushed out my Dex, I've done fluid changes with needed service (radiator crack, tensioner swap, cam install, etc.). But I'm coming up on 15,000 miles without springing a leak, so I thought I'd check.
Old 03-13-2011, 03:09 PM
  #2  
Retired



Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Dark Side, AZ
Posts: 17,920
Received 1,780 Likes on 1,304 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

According to our 1997 owners manual, it says every 150,000miles or 60 months. That seems a bit long considering how much gunk and crap that can build up in that amount of time. Hope this helps.
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel

Old 03-13-2011, 03:22 PM
  #3  
Senior Member
True Car Nut
 
sawgunner's Avatar
 
Join Date: Jan 2009
Location: Dover, NH
Posts: 7,122
Likes: 0
Received 0 Likes on 0 Posts
sawgunner is on a distinguished road
Default

Originally Posted by Mike1995
According to our 1997 owners manual, it says every 150,000miles or 60 months. That seems a bit long considering how much gunk and crap that can build up in that amount of time. Hope this helps.
hey mike that'* Dexcool in a 97
Old 03-13-2011, 03:36 PM
  #4  
Retired



Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Dark Side, AZ
Posts: 17,920
Received 1,780 Likes on 1,304 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

Duh! Thanks for the heads up Steve.
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel

Old 03-13-2011, 03:41 PM
  #5  
Senior Member
True Car Nut
 
sawgunner's Avatar
 
Join Date: Jan 2009
Location: Dover, NH
Posts: 7,122
Likes: 0
Received 0 Likes on 0 Posts
sawgunner is on a distinguished road
Default

i'd go with 3/36 but that'* me
Old 03-13-2011, 05:55 PM
  #6  
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Likes: 0
Received 8 Likes on 8 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

I'd go with what the bottle said. If you used an anycolor than you may have a good amount of time on it.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Soft Ride
General GM Chat
23
03-19-2014 09:48 PM
DeathDealer
General GM Chat
6
02-15-2011 03:47 PM
willwren
Your Ride: GM Pictures & Videos
21
05-01-2007 06:21 PM
willwren
Your Ride: GM Pictures & Videos
24
02-25-2007 10:46 PM
NERV
General GM Chat
2
06-21-2006 03:36 PM



Quick Reply: How often to replace green coolant



All times are GMT -4. The time now is 08:42 PM.