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.
[URL]http://articles.sae.org/11284/[/URL] 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.