I have a 2014 Limited with the 3.5 EB. The coolant level is below the minimum when cool and I need to top it up. I'm unaware of the maintenance history on this truck, but it only has 49K miles so I'm assuming it's the original orange coolant. It's OK to top off with Motorcraft Yellow coolant, correct?

 

yes it is, they are backwards compatible. However at the age of it i would recommend a flush

 

Thanks. I'll double check the reservoir, it was too dark this morning to tell the actual coolant color, but it might already be yellow. This was my late grandfathers truck and he was pretty meticulous with maintenance. Pretty sure he had all maintenance done at the local Ford dealer. Going to check with them today for records when I pick up my gallon of yellow coolant.