[Doworkscotty]

Under my trax and my dad's Colorado we both had green fluid like in the picture. I don't think it's coolant cause it's orange. Found it odd both of us

 

[Trax123321]

i think its just dirty exhaust water. I saw the same thing in my driveway last week

 

[Traxy]

Chemistry 101. lol

95% of the exhaust systems built today are made up of iron alloy and galvanized steel. Exhaust pipes are made of either iron or stainless steel. Heat shields are made of galvanized steel. Galvanized steel uses zinc as a rust inhibitor.

Zinc, when hot and in the presence of iron and a catalyst, creates yellowish green zinc oxide in the form of crystals. The connection is the catalyst, in this case road salt. If the snow is able to touch the exhaust heat shields and the exhaust pipe at the same time, the chemical reaction between the two dissimilar metals creates the bright yellow crystals.

As the hot exhaust pipe melts the snow, the yellow substance drops to the snow covered ground.

Hope this clarifies this question that so many people have scratched their heads about.

 

[Trax123321]

I prefer just calling it dirty exhaust water

 

[Traxy]

But it doesn't come out of the exhaust it comes from outside the exhaust and OP wanted to know what it was.