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Which transmission line from the radiator is the return line the upper or lower one?
Wiki User
∙ 12y ago
I had the same question, I looked in my Chiltons manual and it was useless as it normally is. On a 1996 Jeep Cherokee Classic with the 4.0 straight six, the lower line is the return line. It depends on what kind of vehicle you are working on, I assume not all are the same. I tested it the hard way, removed the upper line and turned on the engine.....be aware you will lose fluid if you try this. Once I had my answer I turned off the engine, only took 2 seconds and I lost enough fluid that I will now have to add some.
Wiki User
∙ 12y ago
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