Motul RBF600 is a great fluid, but for much cheaper, use Ford's heavy duty stuff. It has a dry boiling point of 541deg, which is much higher than the Valvoline stuff. A lot of open trackers use it in all makes of cars, including me. You can get it at any Ford dealer for a few bucks per bottle, vs. $10-$12 per bottle of Motul.

 

The dry point is pretty meaningless unless you open a new bottle and flush it every day as racers do. Wet boiling point is what street users should focus on with atleast an annual change interval.

Moisture migrates in thru the master cylinder filler cap. Look inside the cap for moisture droplets.....they can form overnight.