WTF is THIS?!?!?!

[CHMLEON]

the green stuff is the only coolant i will use

is green coolant in there now?

when did you get the car?

[CollinsAutomotive]

That would be dex-cool sludge. It is most likely a combination of Plastic from your gaskets and cooling system and sludge build up from the coolant itself.

If you flush it get ready to start replacing parts becuase It won;t take long for whatever got eaten by that coolant to puke.

Sean

so i was just outside getting ready to do a coolant flush, and this is what i saw when i took the radiator cap off....



wtf

[silver6_maro]

I had the sam thing with my camaro a few years ago, and i had the dex in it too.

Flush it out good, through the radiator, AND the motor, reallllllly good. get it all out of there, and use the good stuff!!!

[Fro]

this is gonna be fun, oh well, if this engine blows, i have a feeling ill be able to talk my grandfather into buying me an LS7 LOL

[CollinsAutomotive]

Normally the engine won't blow up but gasket will start leaking and the radiator and heater core may fail as well. I would bet at the end of this you are gonna do a heater core/radiator and a set of lower intake gaskets as well as a few hoses. Get it to a reputable repair shop and let them have a look at it.

Sean

this is gonna be fun, oh well, if this engine blows, i have a feeling ill be able to talk my grandfather into buying me an LS7 LOL

[JoeliusZ28]

yea flush that thing out good, put the hose right into the filler cap and get some water through there!

[CHMLEON]

yea flush that thing out good, put the hose right into the filler cap and get some water through there!

Even that won't do the best job.

You need to get Super Concentrated Radiator Cleaner and empty out enough fluid to add it into the radiator. Drive the car like that for a week or two than flush out radiator with the hose. Do all the previous steps 2-3 times and it should get it out of there. And make sure you replace the radiator cap.

Can you tell i have done this before many times.
(3 separate Grand Prix, 1 Firebird, 2 Safari Vans, and 1 Kia )

[ezysk]

Not much new to say, agree with most of the above.

Good thing you caught it though.

[wezeles]

i dont think its dex i think i see some copper flakes in there like bars leak was tossed in it eaither way same thingneeds to be done...

[flozram]

check this:Had the same thing in my Blazer
found out that the factory put a bad cap
and did'nt do a proper fill

talked to some fellow HVAC engineers about Dex-cool
it doesnt react to well in certian enviroments ( bad cap) and it breaks down and turns to muck

I'd flush it bigtime and replace the cap

Check this:
Subject:Rust in Cooling System, Heater Inoperative, Blows Cold Air, Engine Overheats (Flush Cooling System) #99-06-02-012D - (04/09/2002)

Models:1996-2000 Chevrolet and GMC S/T Models (Blazer, Jimmy, Sonoma, S10 Pickup)
1998-2000 GMC Envoy
1996-2000 Oldsmobile Bravada
with 4.3L V6 Engine (VINs W, X -- RPOs L35, LF6)

This bulletin is being revised to include additional model years. Please discard Corporate Bulletin Number 99-06-02-012C (Section 06 -- Engine).
<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=876626&psdid=67&evc=sm#ss1-876626">Condition

Some customers may comment that the heater is inoperative, blows cold air, engine may exhibit an overheat condition or the coolant reservoir has rust in it.
<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=876626&psdid=67&evc=sm#ss2-876626">Cause

Vehicles equipped with DEX-COOL&#174; coolant, which may have been operated for extended periods of time with a low coolant level, usually in excess of 32,000 km (20,000 mi), may be susceptible to the formation of a rust-like material in the cooling system.
<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=876626&psdid=67&evc=sm#ss3-876626">Correction

Flush the cooling system using the repair procedures that follow.
Parts and equipment required/suggested for this correction are listed below.

• 1 each *Prestone&#174; Flush and Fill Kit #AF-KITP U.S. (#00050 in Canada). This kit can be obtained from your local parts supplier and can be used on all vehicles repaired under this procedure. Save it after performing the repair, as it is reusable.
• 1 each *Prestone&#174; Heavy Duty Cooling System Cleaner, GM P/N 12346500 - 1 per vehicle. This cleaner is in powder form and contains a neutralizer. Do not substitute other cleaners. The diluted cleaners that are available in liquid form are not recommended for this repair.
• 5.7 L (6 qt) of 100&#37; (non-diluted) DEX-COOL&#174; coolant (GM Spec 6277M).
• 1 each new thermostat, GM P/N 12563335.
• 2 each new radiator cap, GM P/N 15075565.
• 1 each *Prestone&#174; yellow funnel. This funnel can also be obtained from your local parts supplier. It fits snugly into the radiator opening for an easy fill and is reusable.

*We believe this source and their products to be reliable. There may be additional manufacturers of such products. General Motors does not endorse, indicate any preference for or assume any responsibility for the products from this firm or for any such items which may be available from other sources.
Important: Verify the fuel level in the fuel tank. The fuel level should be above &#188; tank before this procedure is started.
As a precaution, verify the oil level in the crankcase. Add the amount required to bring the oil level into the normal range.


It is recommended the vehicle be placed in a position so that the following are available:

• A sanitary sewer -- not a storm drain, etc
• A monoxivent system (if the outside temperature is less than 10&#176;C (50&#176;F)).
• Hot running water

Notice: Due to the complexity of these procedures, the following repair steps must be strictly adhered to in order to achieve the intended results. Any deviation or substitution may result in sub-standard cleaning/flushing results or system damage.
<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=876626&psdid=67&evc=sm#ss4-876626">Diagnostic Procedure

[Fro]

aight, so i just went and bought the flush and fill kit....








how the hell do i hook it up? I need pics, im horrible with JUST written instructions

[Fro]

ttt

[Phantom409]

the green stuff is the only coolant i will use

Amen, I have changed all my cars to the green stuff.

8-O 8-O 8-O 8-O 8-O 8-O 8-O 8-O 8-O 8-O 8-O 8-O 8-O

I have had majior debates with people over Dex-Cool and they swear it the best stuff till they have to change thier radiator.
Then it's I should have listened to you

Change out your whole system!

You can drain the whole block by removing the plug on the bottom drivers side and you knock sensor on the passenger side.
PLug them back up and reflill.

[Fro]

Amen, I have changed all my cars to the green stuff.

8-O 8-O 8-O 8-O 8-O 8-O 8-O 8-O 8-O 8-O 8-O 8-O 8-O

I have had majior debates with people over Dex-Cool and they swear it the best stuff till they have to change thier radiator.
Then it's I should have listened to you

Change out your whole system!

You can drain the whole block by removing the plug on the bottom drivers side and you knock sensor on the passenger side.
PLug them back up and reflill.

then what was the point of me buyin the prestone kit? LOL

[Phantom409]

The prestone kit will help clean out your system.
In my opion you can't do a good flush if you have junk in the radiator and junk in the block and so on.
You might end up going through a lot of coolant to get it right but in the end it will be worth it.