I use Suzuki filter and Maxim 20-50w fully Synthetic oil. On the rear stand, remove the right side fairing, place tin-foil over the header pipes, drain pan under the engine, remove oil drain plug (front center of the oil pan) drain oil, remove filter (located right above the drain plug), let drip as much as possible. Wipe off and replace plug, install new filter with a touch of oil smeared around the seal, hand tight (or 1/4 turn with filter wrench after hand snugged) and fill with new oil. Remove tin-foil and ensure any remaining oil residue is cleaned off as much as possible. Start, let run a minute or two, shut-off, let sit 3-5minutes, check oil level with bike straight up unloaded (top off if needed), replace right side of fairing.
If you dont have a rear stand, or something to keep the bike upright, remove the left fairing as well, since it will be the low side, and once draining, you can stand it upright yourself, sitting on it for a few minutes.
Hope this helps.