Originally Posted by A727Tflite
The only thing Chrysler did to try and address drainback was to add the anti-draindown valve in the cooler line on rear wheel drive vehicles.


And that doesn't fully prevent converter drainback, it's more to prevent the high-mounted cooler in the side tank of crossflow radiators from draining through the converter. This wasn't a problem when the cooler was mounted in the bottom tank of downflow radiators.

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