The non electric motor style MC the ones on 2000 and older are small so keep an eye on the level and have plenty brake fluid on hand. That being said bleeding the system with the engine running is important to remove air because the extra force from the master cylinder diaphragm helps to get the air moved from the lines while doing the actual bleeding start at the back passenger side move back driver. Then move to passenger front to the driver front. You can bleed the master cylinder on the car if you disconnect the lines but you need some one depressing the pedals also be sure capture and clean away all brake fluid that get on painted surfaces quicklly. You can stop the engine when your not actively depressing the pedal and opening the bleeder screw ( two person job working in tandem).