Lifetime Premium Member
Join Date: Jan 2009
Location: Northern Hemisphere
Another update after I got the carpet out. The stain was definitely due to rain leaking thru the windshield and staining the carpet with rust. I pulled the carpet and washed it. There were no traces of coolant and since I sealed the windshield, I haven't noticed anymore stains. Floor was surprisingly clean (no rust) but I covered it with rust proofing paint anyway. And I have shed about 20lbs of weight after I have removed the soaked carpet underlining, dried everything and replaced it with new one.
Now, I just have to dye the carpet back to the original color.