Quote:

Did I receive the wrong MC, or was the wrong MC on the car from a previous owner?

(1) no, you're good now (2) my guess yes a drum/drum M/C (equal size reservoirs) & if it had no RPV in the disc half next to the firewall (& you'd know it if it did) no prob as long as it was kept topped off as that reservoir half was larger for the discs app (calipers use more fluid vol). We (& your prior owner) keep our stuff topped off whereas Grandpa may not & lawsuit prevention is paramount.

live every 24 hour block of time like it's your last day on earth