Noticed a small spot of bright yellow snow under the car when I moved it this morning (no, there was not a dog lifting his leg under my car). Looks like it is under the left front part of the engine compartment. No idiot lights are on when the car is running. Any ideas what this might be?

 

My guess is anti-freeze.

 

Has anyone else parked there before you did. It could be from a car parked their before. A stock HHR has no yellow liquids I know of.

IF your antifreeze is still Deltex it will be redish orange.

 

Was the snow deep enough that the snow was touching the underside of the car, it could be the heat from the cat causing the snow to change colors?

 

Did you get the underside of your car oil sprayed?

 

- Underside not oil sprayed
- Snow not deep enough to touch underside
- No other car was parked there

Color is bright yellow similar to a hi-liter marker color

 

Can you smell it? Do you have a M/T? could be gear lube ?

 

fuel? or if you are using yellow washer fluid.

 

Could it be oil. I thought i'd had an oil leak until my mechanic found that the gasket on the oil filter wasn't sitting properly so oil was slowly trickling out. Brown watered down could get yellowish.

 

What colort is your washer fluid and antifreeze?

They are the only fluids that could be bright yellow.

The factory Antifreeze is more orange but if it was changed to prestone could now be yellow.

The only fluids you have are Antifreeze, Oil, Brake fluid, Clutch fluid [if manual], tranny fluid and washer fluid. Onlytwo could be yellow.