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Old 06-03-2021, 02:51 PM   #5
Khrrck
Professional Amateur
 
Join Date: Mar 2015
Location: Beaverton, OR
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As far as I am aware, the AW70 is quite long-lived when not used to transmit more than the ~110HP from a N/A engine, and given the standard "good care" for automatic transmissions (timely changes of fluid, no brake boosting or towing which overheats the fluid, etc).

Most common failure is the solenoid system preventing overdrive operation.

Activities which generate extra heat through slippage like towing or mountain roads can be compensated for with the extra cooler. Synthetic fluid also is more stable and may work better in high heat. Extra power, though, will need an AW71 or modern transmission swap.

Efficiency is not the best since some energy is always lost in the torque converter, and a lock-up transmission or manual will get notably better gas mileage.
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