Guys, ano ba finofollow ninyo? Ang mileage ba or ang taon?

For example, 2 years na exactly City ko. Pero mileage ko is 20k pa.

ang sinunod ko eh yung pang 20km checkup lang which is equal to 1 year pa (if i remember correctly)

am I doing something wrong here? mileage ako bumabase. 2 years = 40k km eh.

I need clarification