Ford Super Duty Owner's Manual
Anybody come across anything interesting reading your owner's manual?
Forum Discussion
4x4ord wrote:kellem wrote:
I find it intriguing that everytime I purchase a new truck that the maintenance intervals have increased substantially.
My 2021 SD manual is saying 150K antifreeze....something we use to change annually.
Is a periodic test and coolant additive recharge required?
The coolant test was really in case someone topped off the coolant bottle with the wrong coolant. Ford has switched from the Orange coolant to a new Yellow coolant that last even longer so I doubt a recharge is necessary.
