I bought this motorcycle used. 2900 miles. 2007 DR-Z400SM. The guy assured me all its oil changes were done at the correct time, etc... I go to drain the oil today, and my oil pan damn near spills over the edges it's so full... In total, about 4L... FOUR LITERS of oil comes out of the engine. There was never oil coming out of the exhaust, and there was no oil spilling out when I removed my starter gear cover. I'm hoping she'll be ok. Is 2.3L extra oil going to mean certain death for this machine? Should I sell it? I'm so angry with the previous owner!!