Originally Posted by JHZR2
Originally Posted by FordCapriDriver
There is no problem using Dexcool in any GM car that specs it ( anymore ) the problems with gaskets were solved a long time ago, they simply made the gaskets they were using resistant to the 2-Eha Dexcool uses.
While most manufacturers have now switched to OAT / HOAT formulas, the formulas vary.
GM and Ford use OAT coolant with 2-Eha.
VW uses a Silicated "Si-OAT" with no 2-Eha
Chrysler uses a OAT with no 2-Eha.
And Asian manufacturers use Phosphated "P-OAT" coolant without 2-Eha.
So personally i wouldn't have a problem putting Dexcool in a Ford which has Ford's current Orange OAT coolant, but i would not put it in a VW, Chrysler or any Asian car, as their factory coolant do not use 2-Eha.
2-Eha does very nasty things in cooling systems not designed for it, swell rubber seals, hoses, gaskets, eating away at soldered radiators...
This is an interesting point for discussion. Daimler-Benz forever specified G-05, and the original cooling systems in my early 1980s vehicles make the case for its use.
But G-05 is no more on their approval list. G-48, BMW blue is. It lists 2-EHA as an ingredient, specifically the sodium salt (believe older fed forulations used a potassium salt, not certain though). So naturally I'm hesitant to use G-48 in those same 30+ year old cooling systems that G-05 has protected so well.
My thought is that G-40, which Daimler now specifies, might be a better move if it can be assured to have no eha. G-05 is likely still the best, especially when available at Napa for $12.99 for a full strength gallon at Napa on sale, currently.
But how G-40 plays in the G-05/48 comparability game is a question I have currently.
I've been investigating VW's current G13 coolant, and what happens is that the factory genuine VW G13 does not have 2-Eha
However some aftermarket G13 coolant do have it, like Motul's for example, and this is the same case with G11, G12, G12+, G12++ and G48.
The Zerex G40 that is sold in the US is a non-2Eha formula ( i've looked in the TDS and SDS ).
An unrelated but interesting thing too is that it seems that the current formula of Zerex Original Green is actually Glysantin G64 , which they call a PSi-OAT ( Phosphate + Silicate + OAT )
Right now i am running Febi Bilstein G12++ Si-OAT coolant , ( No 2-Eha ) in both my Fords, neither have shown any sign of complaint since i switched them over to it in early October, as expected.
It even seems to have somehow "healed" the aluminium core of the radiator of one of them, which was pitted due to me using a low quality brand of conventional green ( here in Spain it's typically Phosphate and Borate, no silicate ) .