8-Never use your cooler lines to remove fluid from your transmission by starting the engine or in and attempt to flush by catching fluid in a pan while adding fluid to the dipstick. When this is done no lube is being sent to the planets and bushings and they can go dry and melt down very quickly destroying or significantly shortening the life of your transmission.

9-It is advisable to fully and properly flush a cooler especially when a converter failure is involved. Where a transmission internal failure is unlikely to put debris in the cooler since all fluid coming from transmission must travel through the trans filter. The fluid coming from the Pump or converter does not and any debris from these will certainly end up in the cooler. Its always a good idea to power flush a cooler or replace after a failure but is particularly important in the case of this type failure. Anything that’s in your cooler or lines will end up in your Valve Body, Bushings and Planets. A cooler cannot be properly cleaned simply by blowing air through it. A can of cooler flush which most transmission shops and or transmission parts suppliers should have followed by a blow out with air is the correct way to do it.

10-When installing rubber cooler lines to metal lines it’s a good idea to put a small flair at the end of the metal line. Not too big because you will tear the line on the inside during install. Then place a clamp just ahead of the flair. Also roughening up the outer surface of the metal line with very coarse sand paper in area where clamp will ride will help assure a good seal and reduce the possibility of blow off. Never over tighten clamps to the point of the rubber oozing through or being cut this will cause a failure too.

11-Temp sending units- The best place for these is in the pan since that will give the best average temperature which is what’s important, using the pressure port is ok however you will show temps 10 to 20 degrees higher average than you would in the pan. I do not suggest placing temp senders in either the inlet or outlet from the cooler as they will increase cooler restriction and increase the odds of a leak.

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