This type of wear kills an engine. If the customer kept up with regular oil changes and the previously listed items, the investment is starting to pay off at 180,000 miles. At this milestone, there are other maintenance items a shop should pay attention to in addition to the 125,000-mile recommendations. - See more at: http://www.knowyourparts.com/technical-articles/high-mileage-service-recommendations/#sthash.QKbDGc9c.dpuf