I went with mobil super 5000 10w30 what do you think?
5w30=
API Service Classification SN
Gravity, API 32.9
Specific Gravity 0.8607
Pour Point, °C (°F) -36(-33)
Flash Point, °C (°F), ASTM D 92 221(430)
Viscosity
cSt at 40°C 63.95
cSt at 100°C 10.7
CCS, cP 6,080 @ -30ºC
MRV, cP 26,800 @ -35ºC...