Yesterday I test rode a 2000 FXDX with about 20,500 miles. After the ride, I noticed some liquid dripping from the air cleaner (SE) onto the cam cover. The sales and service folks at the dealer told me this is normal, and my reading on this and other Harley sites supports that. Here's the thing, though: the liquid I saw didn't look like oil; it was light or medium brown (somewhat rust-colored) and opaque. Is this what the oil blow-by is supposed to look like, or is this something I should be concerned about?