I've got a 2001 Suzuki Savage (Bobbed out) fixed the infamous oil leak but my dad put a filter on the breather hose and used a copper tube to connect the hose and filter (dont know why) the copper tube had a hole that was like 1/8" in diameter....took the bike for a 20min ride got to my destination, looked down and the whole rear end was covered in oil...from the rear part of the engine to the tire (everything under the seat)...80% sure that it was because of the filter. I was just wondering if anyone would know where the oil would be coming from exactly (cant figure out where exactly, due the fact that it is everywhere) and I was wondering if and what damage I caused.
Thanks,
Chris  

I know that we put the mesh back in, I made sure of that. I'm going to clean it off today. Then take the filter off and ride it around for a bit to see if it is leaking anywhere else other than the tube.

Didn't run it low. I put oil in it after I cleaned it and took off the filter and copper tube. Took it down the road, not even a quarter mile and looked down and it was all over the place. Looked like it was coming from the right/bottom/rear side of the engine...right about where the eyelet is to see how much oil you have in it. :'(

Or your speedo cable connection is loose, or the seal is worn.