Review on ACDelco 18M1492 Professional Cylinder Assembly by Larry Gaines

This will be the third master cylinder. The first 2, after proper bleeding and installation, every 3-4 months, the lower front oil seal begins to leak, reducing the effectiveness of the brakes. Either Acdelco makes bad production batches, or Revain lets them sit in stock for too long. I hope the 3rd will be charming. Check seals!