Notice that dadsbee is using that purty purple silicone brake fluid like me which doesn't hurt paint nor absorb moisture to cause internal corrosion (SSD here disagrees). I always "bench bleed" the MC when on the car since easier to push the piston. Watch youtubes. It may take 60 strokes to work all the air out. Even then, I see a few little air bubbles in the looped clear tubing, but they might have been sucked in past the threads on the plastic bleeder fittings. After later bleeding thru all wheels, the pedal is stiff so those remaining tiny bubbles weren't a problem.