[Jim Kaekel]

If you ask ten racers a question, you may get ten different opinions. Here's my .02 worth.
Having literally grew-up in a family run transmission shop, I used to run my cooling lines "looped" for years, but noticed the trans getting pretty hot when hot lapping during late rounds. And once it gets hot, there's no time to cool it off when you're being called back to the lanes. Over the past 10 years I've used a pair of parallel mounted heat sink coolers under the car and have found that it works exceptional. I've got a 180° fitting on one end to join the two coolers and a temperature manifold on the inlet port for the temp gauge. Best thing yet, it weighs only a pound or two.