i always carry a bit of fuel hose and bailing wire with me in the truck.  been doing it for years. why? lots of liquids in an automobile runs better when they stay in.  so here’s the blown out transmission cooler bypassed with hose and wire.  i used the “2 x 2 x 2” wire method.  2(1) separate pieces of wire to make 2 “clamps” on each side.  each wire gets 2(2), and only 2, not 1, not 3 or more, just 2 wraps around the hose, and each wrap gets only 2(3) twists to snug, not over tight where the wire stretches or breaks.  got me few hundred miles till i had time to put in a replacement cooler just in time for the heat!!!