Zinc oxide is formed and drips from the undercarriage of your vehicle. If the fluid is coming from your car, you need to determine the fluid’s color. Fluid Leaking From Your Car This Could Lead You To The Possible Cause Get your car towed even if you just suspect you’re leaking brake fluid. Yellow fluid leaking from car in snow . Tellice, snow or ice building up, or scraping your muffler could cause damage, you might find the information in this article helpful: These bright yellow spots are zinc oxide crystals that form in cold temps on the galvanized steel under your vehicle (heat shield, etc). And i'm sure it's not my coolant or any other fluid, because i have no neon yellow fluid in my car. Just grab a flashlight, get down on one knee, and take a good look under your car. If your leak is light yellow. Windshield washer fluid is usually blue or green, but is sometimes pink or orange. There are no fluids in my car that are yellow, and there were no anim...