Suzuki DF4 DF6 Service Kit - 10W40 Ecstar Oil - 2002 to 2010. Complete OEM Service Kit Includes Oil, Gear Lube, and Service Kit 17400-91860 Designed for Suzuki DF4 and DF6 Outboards. The Suzuki DF4/DF6 Service Kit provides everything you need to perform routine maintenance on your 2002-2010 Suzuki DF4 and DF6 four-stroke outboards. This package includes 1 quart of Suzuki Ecstar 10W40 marine oil, 1 quart of Suzuki gear lube, and the genuine 17400-91860 OEM service kit, ensuring you get the right