Recent Topics
Wix : 10k miles? (also comparison question)
by Kuato
05/26/16 07:14 PM
Witnessed accident and driver running from scene
by stranger706
05/26/16 07:06 PM
Initial Vehicle UOAs
by GumbyJarvis
05/26/16 06:20 PM
04 C1500 1/2 Ton; P/S Fluid Disappearing
by TexasTea
05/26/16 05:52 PM
TV logos
by chiefsfan1
05/26/16 05:51 PM
Day 2 the "right" trans-filter doesn't fit either
by 69GTX
05/26/16 05:37 PM
Fram pro synthetic longevity question
by BeerCan
05/26/16 05:25 PM
Motorcycle Scan Tools
by George7941
05/26/16 05:17 PM
RL D6 vs T-WS
by MaximaGuy
05/26/16 04:54 PM
Trailer tire air pressure question
by silveravant
05/26/16 04:09 PM
Liqui Moly or Valvoline Synthec ?
by Mickxalix
05/26/16 03:56 PM
2002 Camry 2.4 147.5k with 7500mile oci GC 0w30 wi
by Thebuckaman
05/26/16 02:53 PM
Newest Members
watergate528, iamtheanimal, 1991300sl, Rdyno, Darsahn
57993 Registered Users
Who's Online
103 registered (AirgunSavant, 2015_PSD, abycat, 4WD, Abakev, 69GTX, 11 invisible), 1599 Guests and 135 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
57993 Members
66 Forums
249448 Topics
4083326 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: 1497
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