i've been running them for most of the last 3 years of racing with great sucess. i took it out for a little while because my trans got so hot i wanted to see if it made a difference. it didn't so i put it back on. it is great protection for your cooler, just make sure you keep up with the filter changes. i use a ford style engine oil filter and change it every race weekend, but i have friends that do it every 10-15k on the street.
for those who say it causes to much preasure drop, here's my theory, and no i never tested it. on your engine you run 5/8" minimum oil line to your filter, on your trans you only run 3/8, this is because the trans needs less than half the flow of the engine, but your using the same filter, so why would it cause a problem?
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