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I am considering changing the ATF and filter in my V-6, but would like to insure that I change all of the fluid at one time. I understand that you can disconnect the line returning ATF from the cooler as it goes back into the transaxle and use the tranaxle pumping action to pump all of the old fluid out -- similar to bleeding your brake fluids. How do you identify which of the two hoses is the return line to the transaxle?

Thanks,
John W.
 

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It appears the return may have a one-way check valve in it. It looks like it is the lower fitting on the trans. You may be able to see this when you look at the fittings attached to the trans. You might flush out the old fluid in the torque converter after reinstalling the pan and adding fresh fluid. The new fluid would then flush out the old; once new fluid appears, stop the engine. This would minimize any danger of transmission damage due to running out of fluid.
 
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