Hey, guys! I finally pulled the trigger on a YZ250F and picked up an immaculate white '09. I'm stocking up on oil filters and noticed that Yamaha changed/updated the oil filter from p/n 5D3-13440-00 to 5D3-13440-09. Does anybody know why? What was changed/modified with the filter design? The dealer tried to tell me that the old p/n would be fine to use, but I feel like he was just trying to sell me on it because that's all he had in stock (why would Yamaha provide a new replacement filter if the old version is still okay for use?). I ended up buying a pack of six Hiflofiltro HF140 filters through ebay and the box says that they replace the 5D3-13440-00 Yamaha p/n. Does that mean these are the same design as the outdated OEM filter, and therefore should not be used? Thanks!