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This Coolant Is Safe for my engine? #4610275
12/21/17 01:51 PM
12/21/17 01:51 PM
Joined: Dec 2017
Posts: 9
Chile
Dymblos Offline OP
Dymblos  Offline OP
Joined: Dec 2017
Posts: 9
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


Last edited by Dymblos; 12/21/17 01:51 PM.
Re: This Coolant Is Safe for my engine? [Re: Dymblos] #4610305
12/21/17 02:14 PM
12/21/17 02:14 PM
Joined: Dec 2017
Posts: 42
Spocant WA
silverbar Offline
silverbar  Offline
Joined: Dec 2017
Posts: 42
Spocant WA
Sure it is safe. Until it goes sour. Change it out again before then.

Re: This Coolant Is Safe for my engine? [Re: Dymblos] #4610323
12/21/17 02:34 PM
12/21/17 02:34 PM
Joined: Jun 2014
Posts: 2,736
Phoenix, Arizona - USA
SirTanon Online content
SirTanon  Online Content
Joined: Jun 2014
Posts: 2,736
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 - 266,000mi
2014 Nissan Altima SL - 2.5 liter/CVT - 60,000mi
Re: This Coolant Is Safe for my engine? [Re: Dymblos] #4610325
12/21/17 02:37 PM
12/21/17 02:37 PM
Joined: Aug 2008
Posts: 340
NJ
Padawan Offline
Padawan  Offline
Joined: Aug 2008
Posts: 340
NJ
Personally, I'd use something like Pentofrost A2.

Re: This Coolant Is Safe for my engine? [Re: Dymblos] #4610402
12/21/17 04:20 PM
12/21/17 04:20 PM
Joined: Oct 2004
Posts: 8,322
Cincinnati, OH, USA
bullwinkle Offline
bullwinkle  Offline
Joined: Oct 2004
Posts: 8,322
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.


06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)
Re: This Coolant Is Safe for my engine? [Re: SirTanon] #4610464
12/21/17 05:50 PM
12/21/17 05:50 PM
Joined: Dec 2017
Posts: 9
Chile
Dymblos Offline OP
Dymblos  Offline OP
Joined: Dec 2017
Posts: 9
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?

Re: This Coolant Is Safe for my engine? [Re: Dymblos] #4610518
12/21/17 06:35 PM
12/21/17 06:35 PM
Joined: Jun 2012
Posts: 694
Reno, NV
redbone3 Offline
redbone3  Offline
Joined: Jun 2012
Posts: 694
Reno, NV
I believe any modern coolant is fine. As long as you flush out the old stuff first.


2014 Passat Wolfsburg, 1995 Miata.
Re: This Coolant Is Safe for my engine? [Re: Dymblos] #4610547
12/21/17 07:14 PM
12/21/17 07:14 PM
Joined: Aug 2008
Posts: 3,231
Where the wind comes sweepin'
Reddy45 Offline
Reddy45  Offline
Joined: Aug 2008
Posts: 3,231
Where the wind comes sweepin'
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.

Re: This Coolant Is Safe for my engine? [Re: Dymblos] #4610570
12/21/17 07:35 PM
12/21/17 07:35 PM
Joined: Dec 2017
Posts: 42
Spocant WA
silverbar Offline
silverbar  Offline
Joined: Dec 2017
Posts: 42
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

Re: This Coolant Is Safe for my engine? [Re: silverbar] #4610648
12/21/17 08:45 PM
12/21/17 08:45 PM
Joined: Dec 2011
Posts: 440
Connecticut 06033
oilmutt Offline
oilmutt  Offline
Joined: Dec 2011
Posts: 440
Connecticut 06033
Green coolant is at AAP every day,it has a green screw top!


'05 Chevy Malibu 6cyl,119k, Syn. Oil (owned)
'16 Toyota Camry,4cyl 25k Syn oil (leased)
'92 Ford Tempo ,4cly 26k Conv oil (managed)
Re: This Coolant Is Safe for my engine? [Re: Dymblos] #4610670
12/21/17 09:15 PM
12/21/17 09:15 PM
Joined: Dec 2017
Posts: 9
Chile
Dymblos Offline OP
Dymblos  Offline OP
Joined: Dec 2017
Posts: 9
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 -_-

Re: This Coolant Is Safe for my engine? [Re: Dymblos] #4610731
12/21/17 10:39 PM
12/21/17 10:39 PM
Joined: Jun 2017
Posts: 40
left cose, USA
resist Offline
resist  Offline
Joined: Jun 2017
Posts: 40
left cose, USA
It is all ethylene glycol, unless you run across some propylene glycol that will cost 10 times as much.

Re: This Coolant Is Safe for my engine? [Re: Reddy45] #4611129
12/22/17 11:03 AM
12/22/17 11:03 AM
Joined: Oct 2008
Posts: 12,640
The Old North State
Sayjac Offline
Sayjac  Offline
Joined: Oct 2008
Posts: 12,640
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.

Re: This Coolant Is Safe for my engine? [Re: Dymblos] #4611300
12/22/17 01:42 PM
12/22/17 01:42 PM
Joined: Dec 2017
Posts: 9
Chile
Dymblos Offline OP
Dymblos  Offline OP
Joined: Dec 2017
Posts: 9
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

Re: This Coolant Is Safe for my engine? [Re: Sayjac] #4611325
12/22/17 02:02 PM
12/22/17 02:02 PM
Joined: Aug 2008
Posts: 3,231
Where the wind comes sweepin'
Reddy45 Offline
Reddy45  Offline
Joined: Aug 2008
Posts: 3,231
Where the wind comes sweepin'
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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