Recent Topics
8 yr old open bottle of M1 5W-30?
by Garyd
12/04/16 12:17 PM
Hybrid Heat Pump Systems
by AirgunSavant
12/04/16 12:03 PM
Shop Oil
by Red91
12/04/16 11:59 AM
Fine Mesh (50 micron) Filter Bags
by larryinnewyork
12/04/16 10:40 AM
Toyota LC 8-Speed AT
by Y_K
12/04/16 10:30 AM
Craigslist GOOD DEAL? Tires and rims.
by SumpChump
12/04/16 09:54 AM
Wall furnace part needed
by Jarlaxle
12/04/16 09:19 AM
Looking for a solar battery maintainer
by Oldmoparguy1
12/04/16 09:02 AM
AC Delco 15W-40?
by KenO
12/04/16 08:19 AM
Quaker State "blend" pdf
by car51
12/04/16 08:07 AM
Only the thick stuff in Denmark...
by DriveHard
12/04/16 07:02 AM
Cold start tick...
by Doublehaul
12/03/16 11:20 PM
Newest Members
nyquil_junkie, BlackThumb, Roswellien, Luis_Gabriel, Tech_man123
59772 Registered Users
Who's Online
83 registered (advocate, 05LGTLtd, AirgunSavant, 77GrandPrix, AandPDan, 69GTX, 4 invisible), 1752 Guests and 16 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
59772 Members
66 Forums
257825 Topics
4241262 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
[email protected] Offline


Registered: 11/23/04
Posts: 930
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 [email protected] (09/09/10 11:55 AM)
_________________________
'16 F150, 2.7EB
'16 F150, 2.7EB
Yes, I own 2 '16 F150s."Thanks Dad!" 1936-2015
97 FW Vista 278
T-4.3Gi 185hr&
4kw genset 17hr- T5

Top
#2012990 - 09/10/10 08:06 AM Re: Flush & Refill - 2002 GMC Envoy [Re: [email protected]]
oldmaninsc Offline


Registered: 09/25/06
Posts: 1498
Loc: California
Originally Posted By: [email protected]
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