Thanks guys. I just topped it off so I will have to wait to see if it is lower on the front or back of the reservoir. I didn't see a partition in the reservoir? The pedal is firm but the travel is longer over the past month. So do I just get a new master cylinder seal and install and bleed the system? No ABS in the 83, I think only the 85 has ABS brakes.

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85 300CD Signal Red/Tan sold
83 300D Manganese Brown 109K
97 E420 Midnight Blue 197K sold
98 BMW 328i Vert White 100K, sold
95 BMW 525i White 125K, sold
93 BMW 525iT Red 193K, sold
95 E320 Green Wagon 125K, sold
94 E320 White 127K, sold
85 300SD 156K Grey (Annie), sold
84 300D Lapis Blue 170K (Judy), sold
99 ML 320 Black (lease), 1998 C230 White (lease)
00 Honda S2000 Red (lease)
86 Mercedes 300E (sold)
84 Porsche 911 Red (sold), 1965 Porsche 911 White (sold)