The smoke is because it drips directly onto the H pipe behind the headers. The fluid is clean and not burnt. I use Amsoil synthetic fluid and it looks like it just came out of the bottle. The filter was new last year and I changed the 'top hat' seal for the filter at that time. Doesn't mean it couldn't have failed, but it would seem unusual for it to happen all of a sudden. Then again, this whole thing is unusual. They are now calling for rain tomorrow, so I probably won't drive it into work to install the cooler. Maybe I'll lay on my back and do it at home, but I really don't see that happening.