OIL CHANGE GUIDE
How to Keep Track of Oil Changes (Especially Across Multiple Cars)
A simple system for tracking oil changes: what to record at each change, how to set the next due mileage, and how to keep multiple vehicles from blurring together.
PUBLISHED AND UPDATED: JULY 8, 2026
At every oil change, record the date, odometer reading, oil brand and viscosity, filter part number, and cost, then immediately write down the next due mileage and date. Keep one log per vehicle so intervals never get mixed up.
CHECKLIST
What to include
- 01Change date
- 02Odometer reading
- 03Oil brand and viscosity (e.g., 5W-30)
- 04Oil quantity used
- 05Filter brand and part number
- 06Cost (or parts cost for DIY)
- 07Next due mileage and date
- 08Receipt or photo
The windshield sticker is not a system
Stickers fade, fall off, and only exist if a shop did the work. The reliable version is one line in your own log with the odometer reading and the next due point — written before you drive off, while the number is still in front of you.
Record the oil, not just the event
Knowing an oil change happened is half the record. The viscosity and brand tell the next mechanic what is in the engine, the filter part number saves you twenty minutes at the parts store, and the quantity catches consumption problems early if you top up between changes.
Multiple cars is where memory fails
With one car you can almost keep the interval in your head. With a daily driver, a partner's car, and a weekend project, the intervals blur — which one was due at 52,000? Keep a fully separate log per vehicle and let reminders, not memory, carry the schedule.
This is the exact case vehicle-record apps are built for: each car has its own history and its own next-due calculation, visible in one place.
GARAGELOG
Build a vehicle history worth sharing.
Keep maintenance, modifications, receipts, and photos connected to your car.
FAQ
Common questions
Should I track DIY oil changes differently?+
Record the same fields plus a photo of the drained oil and the new filter in place. Mark it as owner-performed — documented DIY work is respected far more than undocumented shop work.
How do I start if I do not remember the last change?+
Check for a sticker, an invoice, or a bank statement. If nothing turns up, change the oil now and treat it as record number one — a known baseline beats an unknown interval.