Types of Antifreeze we can use???

[SRG]

You guys should try reading the owners manual:

From 2005 PT Cruiser Service manual:

CAUTION!
Mixing of coolants other than specified HOAT engine
coolants, may result in engine damage and may
decrease corrosion protection. If a non-HOAT coolant
is introduced into the cooling system in an
emergency, it should be replaced with the specified
coolant as soon as possible.
Do not use plain water alone or alcohol base engine
coolant (antifreeze) products. Do not use additional
rust inhibitors or antirust products, as they may not
be compatible with the radiator engine coolant and
may plug the radiator.
This vehicle has not been designed for use with
Propylene Glycol based coolants. Use of Propylene
Glycol based coolants is not recommended.

Adding Coolant
Your vehicle has been built with an improved engine
coolant that allows extended maintenance intervals. This
coolant can be used up to 5 Years or 100,000 miles before
replacement. To prevent reducing this extended maintenance
period, it is important that you use the same
coolant throughout the life of your vehicle. Please review
these recommendations for using Hybrid Organic Additive
Technology (HOAT) coolant.
When adding coolant, a minimum solution of 50% recommended
Mopar Antifreeze/ Coolant 5 Year/100,000
Mile Formula HOAT (Hybrid Organic Additive Technology),
or equivalent, in water should be used. Use higher
concentrations (not to exceed 70%) if temperatures below

34°F (
37°C ) are anticipated.
Use only high purity water such as distilled or deionized
water when mixing the water/engine coolant solution.
The use of lower quality water will reduce the amount of
corrosion protection in the engine cooling system.
Please note that it is the owner’s responsibility to maintain
the proper level of protection against freezing according
to the temperatures occurring in the area where
the vehicle is operated.
NOTE: Mixing coolant types will decrease the life of the
engine coolant and will require more frequent coolant
changes.

[lmmegt]

DexCool meets DaimlerChrysler MS-7170, MS-9769 requirements.

Prestone Exttended Life Antifreeze

The use of aluminum cylinder blocks, cylinder heads and water pumps requires special corrosion protection. Only Mopar(R) Antifreeze/Coolant, 5 year/100,000 Mile Formula (glygol base coolant with corrosion inhibitors called HOAT, for Hybrid Organic Additive Technology) is recommended.

Like I said - the whole issue is protection of the aluminum parts - DexCool does that wether your rig says PT Criuser on the hood or GMC.

[VNT]

Why use something from GM which is biggest crap antifreeze on the market in a Chrysler when you can either buy Mopar Orange or the HOAT G5 ???

I would avoid any antifreeze which is Universal and run the correct stuff to avoid all the grief.


Draft—DEX-COOL 2007, Part 1: Revising A Less-Than-Accurate Report

[lmmegt]

Current formulation DexCool works fine for all vehicles. And it's what I have on hand so I use it.

They are both excellent products in their current formulations.

Would I run D/C HOAT if I had it on hand in my GM? Probably not since my 2008 Duramax truck is worth a bit more than the out-of warranty 2004 PT. Although I am sure the D/C HOAT would work in place of DexCool.

[outfit]

I used the Zerex G5 ... I was told by the dealership if you flushed it all out, you could use dexcool, sorry if I mispelled.. I do not have much faith in them as they can not tell me what is wrong with my AC not cooling...AGAIN.... I would go with Zerex G5, only $10 at NAPA..

[Matt42]

Originally Posted by lmmegt

Current formulation DexCool works fine for all vehicles. And it's what I have on hand so I use it.

They are both excellent products in their current formulations.

Would I run D/C HOAT if I had it on hand in my GM? Probably not since my 2008 Duramax truck is worth a bit more than the out-of warranty 2004 PT. Although I am sure the D/C HOAT would work in place of DexCool.

What you do is what you do. When I bought the 2001 at 80K miles, the independent garage had changed it to DexCool about 2 years earlier. I don't know if that included a full flush. The radiator was quite thoroughly clogged. Cause and effect? I dunno. Would I use DexCool? Not on a bet.

[lmmegt]

Originally Posted by Matt42

What you do is what you do. When I bought the 2001 at 80K miles, the independent garage had changed it to DexCool about 2 years earlier. I don't know if that included a full flush. The radiator was quite thoroughly clogged. Cause and effect? I dunno. Would I use DexCool? Not on a bet.

Yada Yada.

Facts is, DexCool works just fine, just as good or better than any Chrysler product.

[tinosa]

Wonder if Dex-Cool was reformulated after GM agreed to settle?
Nationwide Settlement Reached In Gm/dex-cool Class Action Lawsuit - Law Firm Stueve Siegel Hanson, LLP Attorneys Kansas City, Missouri

[Matt42]

Originally Posted by tinosa

Wonder if Dex-Cool was reformulated after GM agreed to settle?
Nationwide Settlement Reached In Gm/dex-cool Class Action Lawsuit - Law Firm Stueve Siegel Hanson, LLP Attorneys Kansas City, Missouri

From the link:
The lawsuits were filed on behalf of owners of General Motors vehicles, which were factory-filled with "Dex-Cool" coolant. In summary, the lawsuits alleged that Dex-Cool degraded certain vehicles’ intake manifold gaskets and other engine sealability components, and that in certain other vehicles, Dex-Cool formed a rusty sludge, clogging the vehicles’ cooling systems and causing vehicles to overheat.

Fascinating. The radiator in my 01 was clogged with rusty sludge. But according to IMMEGT, I am obviously wrong. I stand corrected.

[Duster]

Don'y forget that Dexcool is OAT while Zerex is HOAT...