2006 Honda Shadow Aero 750, @ 17,300 miles...oil is a blend of several leftover oils with hdeo's added that made a stash of 12 liters: Peak 10w-40 pcmo, Smitty's Super S 10w-40 synblend pcmo, Suzuki 10w-40 syn MC oil, Amsoil 15w-40 OE syn hdeo, Supertech 15w-40 hdeo; filter is Bosch Distance Plus 3300 (bought on clearance); oil will be changed every 2k-2.5k miles & filter changed at 5k-6k miles