The color is a dye to identify what kind of additives are added. In general, green is the older concoction and is designed for steel and copper, whereas the yellow or orange stuff has additives that are better suited for the plastic and aluminum coolant system parts in modern vehicles. I don’t think there are any standards for these colors so OEMs don’t necessarily stick to them.
Many 3rd party suppliers have a variety of colors and they usually specify the additives for each. Word is that you shouldn’t mix different types because the additives can react and gel. > On Jan 17, 2022, at 5:05 PM, gene heskett <ghesk...@shentel.net> wrote: > > You've not had any mold or other growth in it in 5 years? I can't get > past 4 months here. But I've not tried the above yet. I've a couple > gallons of an orange 50-50 mix, what the diff between green and yellow/ > orange? _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
