Transmission Fluid

In my race car, I'm running a Turbo 400 with a 4500rpm converter. I change trans oil after a weekend of racing....I've been using regular trans oil, i.e. Dexron..I've been thinking about using the Royal Purple oil..non-synthetic. Anyone have any experience or opinions about this oil.....or what do you recommend.

Thanks,

Ron

It's good.
I do have a question about why the change?
It's good in my book to improve your chances for longevity and consistency.
I'm only curious to the point of did the fluid show something to alert you to a problem?
Or is it a good thought to catch future problems before they bite you?