DEXCOOl or GREEN

Not unless every bit of the dexcool has been flushed out, which is almost
impossible, I would stay with the Dex.

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    Pull the thermostat, reinstall the housing without a
thermostat(temporarily), disconnect the upper radiator hose, stick a garden
hose in the radiator, start the Jimmy, turn on the water to keep up with
what's running out the radiator hose(have a couple 5gal buckets to catch the
dex-cool, let it run for a while to flush out the system thoroughly, turn
off the hose and truck, pull the lower hose to drain most of the system,
reinstall both hoses, install new thermostat(and gasket), poor in straight
green anti-freeze with engine running till you get a 50/50 mix...have a nice
day!


FYI...I have heard talk that the makers of Dex-Cool and all other 'red' anti
freeze are facing a law suit for blown head gaskets directly related to the
'red'. Also, everyone that I know that has gone green has noticed a drop in
top running temp AND an increase in heater output during the cold months. I
have experienced exactly that, personally!

Hmm, sounds like a good idea to switch to green than considering this truck
has 91k on it now, maybe that would save the head gaskets.

then again the more heat output would be nice with two kids

"Shades" <shades_1970(at)netins(dot)net> wrote in message

 I have 5 vehicles with red, 150k, one change no problems. The issue with
red was contamination from air in the system if low. No one has any
definitive evidence red has damaged gaskets, yet. Lot of anecdotal evidence,
but engineering studies by independents show no correlation. Now of course
coolant let go till it is acidic will be a problem.

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This truck has got a leak, and I havent had the time to stop and look at it,
all I know is it never overheats, but I do see small amounts onthe driveway
after its sat all night.  I'm thinking the canister has a crack in the
bottom, it dont leak when its running so I guess when you shut it off what
little bit gets pushed back up leaks out.


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Shep wrote:

The Reason they got low and air in the system is BECAUSE they it has
Started eating the GASKETS and leaking Slowly..

Anothe GM ploy to make u think u are in the WRONG .. it can only get low
if there is a LEAK !!


  No one has any

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So the leak has to be the gaskets?, There is no normal evap over time?

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If you like red then run it...I am just speaking from what I know and from
what I discuss with people that are in the know. If you like red, great. You
don't need to be verbally aggressive to someone with a different
opinion(though I know I have been from time to time myself).

Shep wrote:


There shouldn't be.  At least I've never seen it.
I think that's a convenient excuse.  On the s/t
trucks with the 4.3 engine, the problem was
with the radiator cap.  It's been re-designed.

Ian

Therer's over 375,000 kilometers on my truck and it's run 'red' since day one
with no problems.  The
system has been flushed a couple times and the thermostat changed a few times in
the past 13 years
and it still runs great.  My temperature gauge never flucuates more than a few
degrees off the 1/4
tank mark of the temp gauge ( guessing 50-60 degrees ) except when I blew the
water pump in it last
year.



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one with no problems.  The

times in the past 13 years

few degrees off the 1/4

the water pump in it last

Has the red stuff been available for 13 years? I thought it had a late-90s
debut.

Good point. Only been available since like 95 I think

Available in Saturn vehicles, the rest of GM didn't start using
it corporate wide until (IIRC) 1996

Ok my mistake of the originality of the 'red'.  I didn't buy the truck new but I
do know the
original owner and I have the maintenance records for everything tho.  He never
mentioned anything
about the fluid changeover just that it was done regularly
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I'd definitely do a visual inspection ASAP.

Naturally, just because one sees coolant on the groud every morning
doesn't neccesarily mean the dreaded "Intake Gasket Issue".

Plastic recovery tanks aren't exactly bulletproof, and the connections
on them are somewhat wimpy also.  On my '97 Tahoe, all the hose at the
bottom of the Recovery Tank had was a cheap plastic squeeze clamp on it,
and I had to once replace it with a Stainless Clamp, as I was dripping
from the underside of the Tank.

There's usually a brass tube that goes inside the plastic tube on the
bottom of these tanks.
It prevents the plastic tube from being crushed when tightening down on
the clamp.  Make sure it goes back in its rightful place.  Mark

"Shades" <shades_1970(at)netins(dot)net> wrote in message

That would be the expected result of flushing the system, whichever color
you use.

Dave

    I was running green in a clean fresh flushed system and went to red
hearing all the BS about how great it was...went back to green and would
never keep it in any vehicle I am in charge of. So your theory that its
because I flushed red form the system and it got better no matter what I put
in is wrong.

"Shades" <shades_1970(at)netins(dot)net> wrote in message

 Also, everyone that I know that has gone green has noticed a drop

So, I suppose "everyone that I know" went through the same process you did.
Green in a freshly flushed engine to red and back to green.
Kind of stretches your credibility, don't ya think?
Unless you can provide some proof that green transfers heat better than red,
in a noticeable way, I'll just take your story for what it's worth.

Dave

Stretches my credibility in what way? Are you saying you know everyone in
this newsgroup except me, so you believe everything everyone in the
newsgroup says except me? Everyone in this newsgroup and all others has to
be taken on their word and on faith that the speak the truth.