I agree with Grimace, ask for the bleeding procedure used, ask where in the service Manuel the procedure is described. There is no bleeder valve in the clutch hydraulics on 2011 and up mustangs.
OAC-Sparky: How can you vacuum bleed when there is no bleeder valve ?
And an honest comment here, not a disrespectful one: You vacuum bleed brakes at the caliper bleeder valve, why would you modify the master cylinder cap? A pressure bleeder is applied to the master cylinder not a vacuum bleeder, perhaps you are confusing the two.
I still agree with Grimmace there is no way to bleed the clutch on these cars.
That dealer was not being honest .
UMI DbleAdjLCAs/UMIloweringbracket/UMI DbleAdjPanhard/GriggsRearTorqueTube(eliminatesUpperControlArm)
JLT CAI/JohnLund 93Tune/Baer6PistonCalipers/14"slottedCrossdrilled2piece rotors
BlackChromeFR500s Nitto295rear 275front
CarbonFiber interior Bartonshortthrow/bracket