I have sold my Goldwing 1800 a couple of months ago. I have a Gallon of GN4 Motorcycle Oil SAE 10W-40SJ and the oil filter # 15410-MFJ-D01 I paid $16.00 for the oil filter and $25.00 for the gallon of oil from the dealership That's over $41 plus tax how about this $20.00 I will take $20 Call Phil at (720)- leave message or text me if you would likeListing originally posted at http