The development of the Ford Automatic Transmission Fluid from specification M2C33-B, through M2C33-D, to the new M2C33-F specification is traced. M2C33-F fluids are formulated to provide greater resistance to the harmful effects of oxidation, consistent friction characteristics, better anti-wear performance, and improved silicone seal compatibility. Requirements of the new specification and reasons for the change are discussed. Some experiences with the ""fill-for-life"" policy over the years from 1960-1967 are cited.


APPROVALS GENERAL MOTOR DEXRONâ III F-30336
FORD MERCONâ M 950805 and M 941108
SPECIFICATIONS ALLISON C4-23472696, CATERPILLAR TO-2, VOITH
More fluid at low temperature than Dexron IIE oils (2000 mPa.s maximum at -20°C instead of
3000), which allows an easier gear changing when cold.
Higher oxidation resistance than Dexron IIE standard.
Oil film stability under high temperature.
Anti-wear, Anti-corrosion, Anti-foam.
MOTUL DEXRON III is the latest evolution of DEXRON specification :
Can be used (and mixed) for applications in which "DEXRON" , "B DEXRON" , "DEXRON II
D", "DEXRON IIE", or "DEXRON III" is required.
Oil change : according to manufacturers’recommendations and to be adapted according to
your own use.
PROPERTIES
Color Visual Red
Density at 15°C (59°F) ASTM D1298 0.857
Viscosity at 100°C (212°F) ASTM D445 7.5 mm2/s
Viscosity at 40°C (104°F) ASTM D445 35.7 mm2/s
Viscosity index ASTM D2270 192
Viscosity at -20°C (-4°F) ASTM D 2602 1135 mPa.s
Viscosity at -40°C (-40°F) ASTM D 2602 14230 mPa.s
Flash point ASTM D92 208°C / 406°F
 
It can be a critical difference, esp with high speed bits like gearboxes, like shear properties of the colecules, foaming, especially for boxes with weak synchro anyway.
 
Im not an anorak i can use google.









And im obviously NOT studying an engineering degree... Ahem... And ive already acepted a yarkshire pud, thanks! Whos are the best though?
 

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