Oil leak
 

Just wanted to post the fix to a problem I had w/ my 90 gsx. I had a pretty good oil leakfrom the timing belt side and had a hard time pinpointing where it was coming from. At idle it was fineand wouldn't leak a drop and off idle while driving it would piss out oil everywhere. It ended up being the camshaft seals, I replaced them and that fixed my problem. Hope this helps anyone in the future!:)