When replacing the master cylinder, it is not necessary to do anything related with the gear box oil. If the gear shift is stiff even when engine is not started, that indicates a problem with the linkages or cables. Try lubricating the joints and see if it helps.
As to the pedal height, if it is too low, have it adjusted slightly higher but do not overadjust, which can cause problems.
Sunday, June 12th, 2011 AT 10:50 AM