Originally Posted By: oldmaninsc
Originally Posted By: rumple
The reason I would never use Prestone universal coolant in a non-Dexcool factory coolant application is the anti-rust additive 2-EHA. This additive has been shown to damage certain gaskets and is a known plasticizer - that is it softens various materials. Current GM vehicles have presumably been fitted with gaskets and other internals that are compatible with 2-EHA, while non-Dexcool manufacturers have not explicitly tested for compatibility and may fail.
Even some GM vehicles weren't Dexcool compatible, the famous leaking gaskets in certain GM models (
see here).
Since G05 and other long life coolants without 2-EHA are readily available, I would never use Prestone in any non-Dexcool factory fill vehicle.
Rumple
Okay, I have a question. I have used the search and didn't really find an answer.
One of my vehicles is a 95 Ford with the 4.0 engine. According to the Ford documents it is suppose to have the green stuff.
Would I be okay using G05 in this vehicle? I used G05 in my 04 Mercury Grand Marquis and it would be nice to have one coolant for both vehicles.
The vehicle has over 200K miles and had a new radiator about two years ago. Right now it has some old green stuff in it.
My next project is replacing the original water pump.
Yes, G05 will work fine. "The green stuff" is quite difficult to find these days- the vast majority of people are using "all-makes" garbage in place of it... and (for now) getting away with it. IMO, GO5 would be your best readily available option.