I have had this leak for a few weeks now but it only seems to appear once a week though. I will drive my car for a while, then the next day there will be fluid all over my driver side exhaust pipe (where the cat would be on the x pipe). Then I will wipe it off and there will be no fluid for days. Well today it was covered again . I have put my car on ramps and tried looking everywhere. I have no idea where the leak is coming from. There is no fluid trail on the exhaust, nothing on the tranny, nothing on the driveshaft! I dont know what it is, but I am getting worried because it leaked significantly last night. It's not power steering fluid, but it almost looks like brake fluid just darker. I just changed my oil, but this fluid is too dark to be new motor oil. Any ideas??? I am almost beginning to believe it might have leaked down the firewall and dripped from the subframe onto the exhaust. Not sure though.