Don’t need a reminder

I just change it every 5000 miles, whenever I see the Speedo tick past a 5 or a 0 on the forth digit.. I change it


I am suposed to go to 10,000 before the change, but that seems a bit long to me.

__________________
1999 E300 TurboDiesel
2007 Ford Explorer limited
1981 John Deere 650 Diesel tractor