How meticulous is your maintenance?

[FTD]

I have a file folder that I drop receipts in. I log the oil changes and other self maintenance, although it might take me a while to get around to logging it. I put a date and mileage in my head and hope I remember it when I finally write it in. So, its all documented in some fashion. I do not document fill ups and mileage. My older sister keeps a binder and tracks quantity, price, and mpg with each fill up. Yikes!