When i pull the oil drain bolt towards the front of the engine(below the filter) it drains clear like brand new. then i remove the filter, same thing clear new oil draining from the filter cavity. then, when i pull the drain bolt towards the rear of the engine, dirty, grey, almost black, thin oil, you can tell its been in the clutch/tranny. So, why wouldnt all the oil look the same, being that there is only one supply for the engine/tranny? This is on my 2010, after about 3 engine hours time.