You can usually get a pack of like 5 OEM filters on ebay and they end up being like half of whatever dealer price is. Oil I used to be die hard synthetic every 2,500 miles but I see so many bikes come in with like 50, 60k on them and I always ask about their oil changes and 9 times out of 10 they are like "just car oil" or "just regular suzuki oil every 5,000 miles" so I'm sick of shelling out $50 for oil change supplies every couple months, with this bike I'm just using regular $2 a quart suzuki 10w40, but still changing it under 3k since its cheap.