You have to take your car to Certified. They are very knowledgeable and trustworthy. I have been dealing with them for years and they will tell you the honest truth about your car and advise you for what is best, not what will make them more money. They have saved me so much money. Sometimes, they were almost half what the Lincoln Dealership wanted to charge me. "Amazing service and great guys doing a great job!" I will never take my cars anywhere else.