In order to properly maintain your engine you should always use the factory recommended oil weight and composition. 5W20 Engine Oil is the same oil found in your engine when you purchased it from the dealership, its also what would be serviced if you brought it to them to change your oil for regular maintenance. The Maxpro engine oil lubricates the internal moving parts and maintains its viscosity at high temperatures unlike some traditional oils. This helps to ensure that the oil pump is not over working itself and the engine is getting the proper lubrication at highway speeds. Powered by ExportYourStore.com