Perhaps I have an unique approach to creating a vehicle maintenance
workbook.'


Above are cells containing the VIN, Registration date, and 'next oil
change'.
I need help with a function that will track the mileage that I input
and notify me then I need to send the vehicle to maintenance. Maybe
something that will notify me if I type in a mileage equal to or
greater than last known oil change plus 3,000 miles.

The mileage row is the "9"

My worksheet headers are in column 'A'

Date:
Mileage:
Invoice:





Any help will be more than gracious, if you need to see my workbook,
please don't hesitate.

*thanks,
Noah