OEM Lincoln MKS Thermostat

Lincoln MKS Thermostat Parts Questions & Experts Answers

• Thermostat
  1X4Z-8575-B
  Q: How to service the thermostat on Lincoln MKS?

  A: Draining the cooling system constitutes the first step in servicing the thermostat. You should start by removing the Air Cleaner (ACL) assembly together with the outlet pipe before removing two bolts from the thermostat housing cover and placing it safely aside while reattaching the bolts to 10 Nm (89 lb-in). The service requires you to remove and clean both the O-ring seal and thermostat before inspecting the O-ring seal and replacing it with a fresh one if necessary. The cooling systems of vehicles built before May 18, 2009 require the use of Motorcraft® Premium Gold Engine Coolant yet all subsequent models need Motorcraft® Specialty Green Engine Coolant. These different fluid types cannot be combined because the resulting mix leads to reduced corrosion protection which in turn can harm the engine along with the cooling system. Clean engine coolant serves to lubricate the O-ring seal of the thermostat before you reinstall it according to reverse order. The cooling system service must end with filling the system while performing bleeding procedures.