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#4610275 - 12/21/17 01:51 PM This Coolant Is Safe for my engine?
Dymblos Offline


Registered: 12/03/17
Posts: 9
Loc: Chile
This http://prestone.com/products?detail=AF888
The 50/50

Car: Mazda 929 2.0 2BB 1990 Station Wagon DX Automatic https://en.m.wikipedia.org/wiki/Mazda_F_engine#MA



Edited by Dymblos (12/21/17 01:51 PM)

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#4610305 - 12/21/17 02:14 PM Re: This Coolant Is Safe for my engine? [Re: Dymblos]
silverbar Offline


Registered: 12/20/17
Posts: 42
Loc: Spocant WA
Sure it is safe. Until it goes sour. Change it out again before then.

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#4610323 - 12/21/17 02:34 PM Re: This Coolant Is Safe for my engine? [Re: Dymblos]
SirTanon Offline


Registered: 06/23/14
Posts: 2137
Loc: Phoenix, Arizona - USA
No.. your engine uses conventional green coolant, and that Prestone stuff you've linked is the Dex-Cool stuff.
_________________________
2010 Ford Fusion SE - 2.5 liter/6F35 Trans - 256,000mi
2014 Nissan Altima SL - 2.5 liter/CVT - 54,500mi

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#4610325 - 12/21/17 02:37 PM Re: This Coolant Is Safe for my engine? [Re: Dymblos]
Padawan Offline


Registered: 08/24/08
Posts: 333
Loc: NJ
Personally, I'd use something like Pentofrost A2.

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#4610402 - 12/21/17 04:20 PM Re: This Coolant Is Safe for my engine? [Re: Dymblos]
bullwinkle Offline


Registered: 10/09/04
Posts: 7649
Loc: Cincinnati, OH, USA
If it's available, this is the Prestone product you want-
http://prestone.com/products?detail=AF3200
Good old low silicate conventional green.
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#4610464 - 12/21/17 05:50 PM Re: This Coolant Is Safe for my engine? [Re: SirTanon]
Dymblos Offline


Registered: 12/03/17
Posts: 9
Loc: Chile
Originally Posted By: SirTanon
No.. your engine uses conventional green coolant, and that Prestone stuff you've linked is the Dex-Cool stuff.



what is the problem with dex-cool?

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#4610518 - 12/21/17 06:35 PM Re: This Coolant Is Safe for my engine? [Re: Dymblos]
redbone3 Offline


Registered: 06/09/12
Posts: 654
Loc: Reno, NV
I believe any modern coolant is fine. As long as you flush out the old stuff first.
_________________________
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#4610547 - 12/21/17 07:14 PM Re: This Coolant Is Safe for my engine? [Re: Dymblos]
Reddy45 Offline


Registered: 08/15/08
Posts: 2957
Loc: USA
Originally Posted By: Dymblos
Originally Posted By: SirTanon
No.. your engine uses conventional green coolant, and that Prestone stuff you've linked is the Dex-Cool stuff.



what is the problem with dex-cool?


There is this chemical called 2EHA that is used in certain formulas, but it's also often falsely attributed to as a plasticizer when it's infact a PRECURSOR to a chemical used to make plasticizer.

So that is making everyone have flashbacks about the early Dex-Cool and how it melted gaskets.

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#4610570 - 12/21/17 07:35 PM Re: This Coolant Is Safe for my engine? [Re: Dymblos]
silverbar Offline


Registered: 12/20/17
Posts: 42
Loc: Spocant WA
Originally Posted By: Dymblos
Originally Posted By: SirTanon
No.. your engine uses conventional green coolant, and that Prestone stuff you've linked is the Dex-Cool stuff.



what is the problem with dex-cool?


Only problem with this OAT extended life stuff is that it can get very acidic when it is overdue for a changeout. That's why I said to change it out before it goes bad, and then it is no problem whatsoever. Same reason it ate gaskets when dex cool came out, because it wore out. Left in too long or allowed to dry up in "expansion" tank.

Actual "original" green stuff is pretty hard to find in the US any more. Green is not a formulation. OAT comes in green but it is not original formula

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#4610648 - 12/21/17 08:45 PM Re: This Coolant Is Safe for my engine? [Re: silverbar]
oilmutt Offline


Registered: 12/16/11
Posts: 428
Loc: Connecticut 06033
Green coolant is at AAP every day,it has a green screw top!
_________________________
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'92 Ford Tempo ,4cly 26k Conv oil (managed)

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#4610670 - 12/21/17 09:15 PM Re: This Coolant Is Safe for my engine? [Re: Dymblos]
Dymblos Offline


Registered: 12/03/17
Posts: 9
Loc: Chile
The manual say (1990 manual..) the coolant liquid had a base of ethylene glycol to protect the aluminum engine also some Antifreeze and Anticorrosive ingredient
Then say.. do not use any coolant fluid with base of Alcohol or methanol

there is no more info in the manual about this -_-

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#4610731 - 12/21/17 10:39 PM Re: This Coolant Is Safe for my engine? [Re: Dymblos]
resist Offline


Registered: 06/08/17
Posts: 40
Loc: left cose, USA
It is all ethylene glycol, unless you run across some propylene glycol that will cost 10 times as much.

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#4611129 - 12/22/17 11:03 AM Re: This Coolant Is Safe for my engine? [Re: Reddy45]
Sayjac Offline


Registered: 10/13/08
Posts: 12247
Loc: The Old North State
Originally Posted By: Reddy45
Originally Posted By: Dymblos
Originally Posted By: SirTanon
No.. your engine uses conventional green coolant, and that Prestone stuff you've linked is the Dex-Cool stuff.


what is the problem with dex-cool?


There is this chemical called 2EHA that is used in certain formulas, but it's also often falsely attributed to as a plasticizer when it's infact a PRECURSOR to a chemical used to make plasticizer.

So that is making everyone have flashbacks about the early Dex-Cool and how it melted gaskets.


I don't know if using the word "plasticizer" is a sematic difference or not. I've often read that 2eha is a known plasticizer. Even if it isn't a "plasticizer", this is what an sae article linked says about it. http://articles.sae.org/11284/ There are other similar descriptions of 2eha that have been in Motor Magazine articles on AF types.

"Neither Chrysler nor Fiat has released the complete composition formula for their antifreezes. They reportedly are cocktails of three organic acids, featuring sebacate, but no 2-ethylhexanoate (2-EHA). The latter is a cost-effective but controversial additive that softens plastics, particularly silicone, leading to leaks from affected sealing materials, which means that silicone cannot be used in gaskets, O-rings, and hoses if the antifreeze contains 2-EHA."
So "plasticizer" or not, 2eha apparently doesn't play well with some plastics/silicone materials.

As for OP's question, the link looks like Prestone DexCool. 'Could' be fine in 1990 Mazda. Otoh, it might not ply well with the gaskets orings etc. I don't know what other AF options are available in Chile. I'd even go with the latest Prestone Universal AF before DexCool because best information says it uses a lower concentration of 2eha in the formula.

Not a DexCool hater. I'd have no problem using it now, especially in newer vehicles with the DexCool AF spec.

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#4611300 - 12/22/17 01:42 PM Re: This Coolant Is Safe for my engine? [Re: Dymblos]
Dymblos Offline


Registered: 12/03/17
Posts: 9
Loc: Chile
http://www.bractwalls.com/user/image/prestoneantifreeze.pdf
https://www.homedepot.com/catalog/pdfImages/6c/6c9b6fdd-034f-46b3-8f38-25d431f8dfc6.pdf

there is no much difference in the 2EHA anmount in both 0-5 vs 1-5
I have reading and the main problem is when is combined with green coolant or rest of a previous coolant
in my case, all the engine was removed and cleaned.. also the radiator. the hoses are new

With all that. do you think there be problems? with the gaskets orings etc

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#4611325 - 12/22/17 02:02 PM Re: This Coolant Is Safe for my engine? [Re: Sayjac]
Reddy45 Offline


Registered: 08/15/08
Posts: 2957
Loc: USA
Originally Posted By: Sayjac
Originally Posted By: Reddy45
Originally Posted By: Dymblos
Originally Posted By: SirTanon
No.. your engine uses conventional green coolant, and that Prestone stuff you've linked is the Dex-Cool stuff.


what is the problem with dex-cool?


There is this chemical called 2EHA that is used in certain formulas, but it's also often falsely attributed to as a plasticizer when it's infact a PRECURSOR to a chemical used to make plasticizer.

So that is making everyone have flashbacks about the early Dex-Cool and how it melted gaskets.


I don't know if using the word "plasticizer" is a sematic difference or not. I've often read that 2eha is a known plasticizer. Even if it isn't a "plasticizer", this is what an sae article linked says about it. http://articles.sae.org/11284/ There are other similar descriptions of 2eha that have been in Motor Magazine articles on AF types.

"Neither Chrysler nor Fiat has released the complete composition formula for their antifreezes. They reportedly are cocktails of three organic acids, featuring sebacate, but no 2-ethylhexanoate (2-EHA). The latter is a cost-effective but controversial additive that softens plastics, particularly silicone, leading to leaks from affected sealing materials, which means that silicone cannot be used in gaskets, O-rings, and hoses if the antifreeze contains 2-EHA."
So "plasticizer" or not, 2eha apparently doesn't play well with some plastics/silicone materials.

As for OP's question, the link looks like Prestone DexCool. 'Could' be fine in 1990 Mazda. Otoh, it might not ply well with the gaskets orings etc. I don't know what other AF options are available in Chile. I'd even go with the latest Prestone Universal AF before DexCool because best information says it uses a lower concentration of 2eha in the formula.

Not a DexCool hater. I'd have no problem using it now, especially in newer vehicles with the DexCool AF spec.


I'm just not satisfied with the notion that 2EHA is this terrible thing that caused the Dex-Cool issues for GM in the 90s and that the chemical is still in use today in major brand antifreezes.

It either was bad and should have been taken off the market or it wasn't to blame and is still in use today because it's harmless.

But I am not a chemist and don't know where to look in the chemical makeup to see if it can deteriorate gaskets.

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