Q: Brake master cylinder leaking, clutch jammed up. Is quote for new clutch that doesn't mention brake master reasonable? 1998 Ford Escort

Hi there - I think the fact that the brake and clutch hydraulic system share the reservoir is confusing how to repair 2 separate issues. For sure, your brake master cylinder appears to be failing, and should be replaced. This is a safety issue of course. On the clutch side - if the fluid level is above the "Min" line, it probably isn’t low fluid level that is a problem unless you already have air in the clutch hydraulic line. The failure of the clutch to disengage consistently may be a failure of the clutch pilot bearing, which is, unfortunately, inside the clutch assembly. A clutch pilot bearing that is seizing will act the same as a a failing clutch hydraulic system - it will be difficult to engage any gear from a stop, or shift gears while moving. I recommend a brake master cylinder replacement, and bleeding the clutch hydraulic system performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, perform these repairs, and give you a solid basis for deciding whether the clutch really needs replacement, or if it was the clutch hydraulic system that was at fault. If the clutch is still failing to disengage, then you have logically confirmed that diagnosis.