I doubt Mobil 3309 is synthetic. Flash points, Pour point and viscosity numbers 14,000 vs 5190
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MOBIL ATF 3309
Viscosity
cSt @ 100ºC 7.2
cSt @ 40ºC 35
cP @ -40ºC (-40ºF) 14,000
Viscosity Index 180
Flash Point, ºC ›185
Pour Point, ºC ‹ -45
Density 0.8540
Color Red
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Mobil 1 Synthetic ATF
Viscosity, ASTM D 445
cSt @ 40º C 34
cSt @ 100º C 7.6
-cP @ -40º C 5190
Viscosity Index, ASTM D 2270 199
Pour Point, ºC, ASTM D 97 -54
Flash Point, ºC, ASTM D 92 236
Density @15º C kg/l, ASTM D 4052 0.86
Color Red
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