2004 Honda VT 750 Shadow Aero "stream service manual" Questions

...service manuals like clymer have details or the mechanic who scanned bike--a code reader just gives a general direction--a data stream run will pinpoint the problem--dont want to just replace parts ...

...stream, approximately from somewhere above. What could it be ? And why i didnt have any oil issues before i connected 2 tubes.... wow get it fixed or burn up the engine you will gee buy the service ...