Service manual says this: ATF type
M-V or equivalent (e.g. DexronIII)
AMSOIL compatibility says:
AMSOIL ATF is recommended for transmission, hydraulic and other applications requiring any of the following specifications:
GM DEXRON II, III & VI
Ford MERCON, MERCON V & SP
Chrysler ATF+ through ATF+4
Honda Z-1 (Not for use in CVT transmissions)
Toyota Type T and T-IV
Mitsubishi/Hyundai Diamond SP II & III
Allison C-3, C-4
Caterpillar TO-2
Voith G607, G1363
ZF TE-ML 14A, 14B, 14C
Mercedes Benz 236.1, 236.2, 236.6, 236.7, 236.9
BMW 7045E
NAG 1 & 2
JWS 3309
LT 71141 (ESSO)
Nissan Matic D, J & K
Vickers I-286S & M-2950S
Excellent for power steering units that use ATF.
Not for use in CVT transmissions.
SERVICE LIFE
AMSOIL Synthetic Automatic Transmission Fluid is recommended for use up to 50,000 miles under severe service* and up to 100,000 miles under normal service* or according to the vehicle manufacturer recommended intervals, whichever is longer. AMSOIL recommends thoroughly draining the transmission and flushing with new AMSOIL ATF to achieve a minimum 90% purity of new transmission fluid. Drain intervals may be extended further with oil analysis.
So if the service manual is saying dexronIII is an equivilant & amsoil says dexronIII is compatible then I'm feeling good about it. Plus the fact that it's been in the tranny for 50k without issue. Not pushing 70-100k they say fluid should be OK. I'll be doing flush/refill well before then, like within 10k more miles.