1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 293Get this manual

1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 293

DF40QHDF50QH 11-2 Data DF40QH DF50QH

FUELOIL
Suzuki highly recommends that you use alcohol-free unleaded gasolinewith minimum pump octane rating of 87method) or 91 (Research method)However, blends of unleaded gasoline and alcohol with equivalent octane content may be used
Engine oil

API classification

SE, SF, SG, SH, SJ