Published 2026-09-28

How to choose an oil change interval

Use the book, the oil that was filled, and how you actually drive.

A round number on a website is not your interval. Oil is whichever comes first: a distance, a time, and sometimes a spec the last fill had to meet.

The service checklist on this site uses a common gap so you notice oil at all. Choosing the gap you will obey is a different job.

  1. 01

    Read the maintenance chapter, not the marketing page

    Find oil and filter. Note kilometers, months, and whether 'severe' or 'short trip' has its own column. That column is the one most city cars actually live in.

  2. 02

    Match the oil that is in the engine

    The interval assumes a spec. If the last shop used something else, the book's long gap may not apply. Copy the spec from the invoice into the service note.

  3. 03

    Pick one rule and write the next due mark

    Distance, date, or both. Put it on the oil row you just logged. A reminder without that mark is only a calendar guess.

  4. 04

    Change the rule when the car's life changes

    Towing, a lot of idle, or a year of short trips is a reason to shorten. A highway year is not a reason to stretch past the book.

What a generic checklist is for

It is a prompt when you have no book in the glovebox. It is late for some engines and early for others. Never copy its 10,000 km into a reminder if the manual says 15,000 or 8,000.

RPMBase reminders follow the date or kilometers you set. They do not scrape this website's checklist.

Time still counts

Oil ages in a car that barely moves. If you drive little, the month figure in the book is the one that will fire. A kilometer-only reminder stays quiet while the oil does not.

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Questions

The shop sticker disagrees with the book.Show

Ask which spec they filled and whether they used the severe schedule. Then pick one source for the next due mark and write why in the note.

Can I wait for the oil life percentage on the dash?Show

Only if the manufacturer says that display is the schedule. Many cars still want a distance or a date. Do not treat a bar graph as proof if the handbook never mentioned it.

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