2003 Ski-Doo ZX Series Factory Shop Manual, Page 156Get this manual

Section 04 ENGINE Subsection 06 (OIL INJECTION SYSTEM)
493, 593, 593 HO, 693, 793 and 793 HO Engines

Recommended injection oil

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives