Recent Topics
Great Timing!
by The Critic
01/29/15 02:05 AM
Tesla P85D insane launch reactions
by Nick R
01/29/15 01:40 AM
Who Calculates/ How is MPG Calculated?
by Nick1994
01/28/15 11:29 PM
5w20 or 0w20 in racing
by Camprunner
01/28/15 10:12 PM
Motor oil sale at O'reilly and Costco
by dothedrew1202
01/28/15 09:56 PM
Cracking Bathroom Paint - Calling Bob Vila Types
by SumpChump
01/28/15 09:46 PM
Big filter sale at my local NAPA store
by SilverC6
01/28/15 09:45 PM
MT shifting into reverse by accident?
by FirstNissan
01/28/15 08:44 PM
284k mile 1999 Mustang GT 4.6l valve cover off
by donnyj08
01/28/15 08:42 PM
STP Multipurpose Motor Treament
by Johnny248
01/28/15 08:36 PM
Help with synthetic FC-W Marine 10w-30 options
by nogm4me
01/28/15 08:19 PM
Amsoil causing seeps?
by kawie_guy
01/28/15 07:58 PM
Newest Members
JacobH, ElGeneral, partsguy1, JTP07, AstroBike
52652 Registered Users
Who's Online
28 registered (901Memphis, bubbatime, dailydriver, 3800Series, ag_ghost, 4 invisible), 575 Guests and 161 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
52652 Members
66 Forums
225731 Topics
3591983 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#2012041 - 09/09/10 11:49 AM Flush & Refill - 2002 GMC Envoy
Chriznat20@msn.com Offline


Registered: 11/23/04
Posts: 886
Loc: Michigan
My 2002 Envoy (4.2L I-6) has 140,000 miles on it. Ive owned it since 60,000 miles, circa 2004.

The water pump is *just about* to give up the ghost, with a whole bunch of play in the water pump shaft, but not leaking yet. I plan on replacing it in the next week or so.

I replaced the t-stat around 100k, and partially drained the cooling system and refilled with 50/50 Dex-cool Prestone.

I would really like to drain out ALL the coolant this time, fill it up with a flushing product, drain that, THEN replace the water pump and refill with NEW dex-cool.

What is a good recommended "flush" product, and what coolant is recommended here on the forum?


Edited by Chriznat20@msn.com (09/09/10 11:55 AM)
_________________________
07 Prius
92k miles Edge
05 Jeep GC-4.7l
105k miles Edge
97 FW Vista 278
T-4.3Gi 185hrs&
4kw genset 17hrs- T5

Top
#2012990 - 09/10/10 08:06 AM Re: Flush & Refill - 2002 GMC Envoy [Re: Chriznat20@msn.com]
oldmaninsc Offline


Registered: 09/25/06
Posts: 1293
Loc: California
Originally Posted By: Chriznat20@msn.com
My 2002 Envoy (4.2L I-6) has 140,000 miles on it. Ive owned it since 60,000 miles, circa 2004.

The water pump is *just about* to give up the ghost, with a whole bunch of play in the water pump shaft, but not leaking yet. I plan on replacing it in the next week or so.

I replaced the t-stat around 100k, and partially drained the cooling system and refilled with 50/50 Dex-cool Prestone.

I would really like to drain out ALL the coolant this time, fill it up with a flushing product, drain that, THEN replace the water pump and refill with NEW dex-cool.

What is a good recommended "flush" product, and what coolant is recommended here on the forum?


I rarely ever use a "flush" product. I really don't think it's necessary. Flushing with water usually works well.
I replaced the thermostat in my 05 Trailblazer EXT around the 4.5 year mark with about 50,000 miles on it. The inside of the engine was very clean. I refilled with Prestone Dex Cool.
_________________________
2013 Chevrolet Impala LT
2004 Mercury Grand Marquis LS
2005 Toyota Camry LE
1998 Ford F-150 XLT

Top