Suzuki 2003-2007 DF60 DF70 Outboard Motors Service Manual, Page 262Get this manual
LOWER UNIT
GEAR OIL Fill the gearcase with the specified gear oilSee the "PERIODIC MAINTENANCEGEAR OIL" section on the page 2-5Necessary amount of gear oil: 050 ml (35.537.0 USImp.oz) 99000-22540: SUZUKI OUTBOARD MOTOR GEAR OIL