Lefties

Just bought these two late in July both running fine, the XP was run stricly with mineral oil (clear in colour), the SPI had blue fluid I assume 2stroke or TCw3. Both are in need of oil and i have like 3 cases of old 2 stroke oil (red in colour) it was for yamaha RD350, says it works fine for Rotax engines. My question is what type fluid you guys would use, make this thread an Oil debate post what you would use..
94Seadoo XP 650 mineral oil
95Seadoo SPI 600 ?(blue TCW3 or 2 stroke oil)

YamaDoo

I would use the SeaDoo mineral oil. Experimenting to save $5 is not worth it.