Do the boots on a 1999 Ford Taurus with rack n pinion fill up power steering fluid?

No, the boots on a 1999 Ford Taurus's rack and pinion steering system do *not* fill up with power steering fluid. The boots are rubber coverings that protect the tie rod ends and other components from dirt and debris. Power steering fluid is contained within the power steering system's lines, pump, reservoir, and the rack and pinion itself (inside the housing). If you're seeing fluid leaking near the rack and pinion boots, it's likely a leak from a seal within the rack and pinion, or from a power steering hose.