What oil filter/number and where do you buy, other than Honda do you use. I will be putting the 10W40 Mobil 1 fully synthetic, in my trike before taking a trip from Florida to Wing Ding at the end of the month. I have been using Amsoil with the Honda filter, but cost is getting too much. I know there has been a thread about different oils, but don't know much about searching. I am not looking for a discussion on oils, just want to change my own oil, and not pay a fortune, but still want to protect the trike.