I searched on the forum for a DIY but couldn't find it. It's been a year since the 600 mile service...have about 4,000 now and want to do an oil change. Will pick up the oil and filter at the dealer, but does anyone have a DIY that shows where the drain plug is? And do I need a filter wrench? Is the capacity on the 800ST 3 liters with a filter change? Should I fill the filter with oil before installing? Any other tips? Thanks.