No. Think about the difference between disc and drum brakes. Disc brakes adjust for wear by moving the caliper piston out a miniscule amount with each bit of wear. Drum brakes adjust for wear with the mechanical adjuster that physically moves the shoes; the wheel cylinder isn't involved. So drum brake wear has no impact on the hydraulic fluid level.

 

Thanks for that! I wasn't sure if there was hydraulic actuation there or not. I haven't torn into mine, and I have limited experience with drums.
I know on my car though, the clutch, and brake hydraulic fluid are all ran from the same master cylinder pump. It's one crazy octopus looking deal!

 

The rear brakes are hydraulically ACTUATED (like any modern vehicle with drum brakes), but they're mechanically ADJUSTED.

There's no way one master cylinder can operate a brake system and clutch separately. They may share one reservoir, but there have to be two separate masters.

 

I was reading up on what I said, they share the same reservoir. It's the master for the clutch, but the reservoir for the ABS pump. IDK. Without being able to look at car, it's hard to tell if I got that backwards or not.