[Walt Fricke]

Another point: It seems that the Cup cars vent their reservoir through a hole in the top of the cap. To keep the top of the reservoir clean, the owners wrap that area with a paper towel (usually the blue kind) held on with a rubber band. This keeps the small amount of fluid from leaving the immediate vicinity.

And on my track only car, with dual MCs mounted low and aftermarket reservoirs mounted high, I never loose any fluid. Pulls even more Gs than the SC. Those reservoirs are the kind with a black rubber bellows inside, so basically the fluid is never exposed to air, or at least has a lot lower exposed surface. They vent from the inside (dry side) of the bellows to the atmosphere. These would solve the power brake overflow issues if they could be made to fit, I think. But these are round and taller. I can run for several years with this setup without having to touch anything beyond changing pads.