# Two numbers, and whichever one arrives first wins

> A windscreen service sticker carries a date and a mileage, and whichever one arrives first decides when the car goes back.

August 19, 2026 · https://justog.club/stories/oil-change-sticker

A small adhesive sticker on the inside of the windscreen, headed NEXT SERVICE. A date filled in by
hand, 03.26, and a mileage beside it, 92,400. A garage name printed small at the foot, A. VELL.
One corner is already starting to lift.

Nobody signed it and nobody asked permission to stick it there. It's a note from a stranger, left
where the driver can't help seeing it every day.

## What is this, exactly?

A garage's own reminder, applied after a service, telling the next visit when to happen.

It isn't part of the car and it isn't required by anything. A mechanic peels the backing off a
small printed sticker, writes on it with whatever pen is in the till, and presses it onto the
glass before the car leaves. It's the cheapest kind of record there is, and one of the more
effective ones, because of where it goes.

## Why two numbers instead of one?

Because a car doesn't wear out on a calendar or an odometer alone.

A vehicle driven hard covers 92,400 miles well before 03.26 comes round, and its oil needs
changing on distance, not on the date. A vehicle that mostly sits on a drive does the opposite —
the oil degrades sitting still, and the date arrives first. The sticker gives both figures because
either one can be the one that matters, and it doesn't know in advance which.

Whichever number gets there first wins. That's the entire logic, and it fits in a rectangle the
size of a matchbox.

## What makes the handwriting part of the design?

The ballpoint sitting badly on the gloss coating is the evidence that somebody filled this in
standing at the driver's door, not sitting at a desk.

A printed date would be tidier and less honest. The figures here were written against a curved
window, probably balanced against a clipboard or a knee, by someone with other cars waiting behind
this one. That's not a flaw in the object. It's the reason it's believable.

## Who reads this note, really?

Whoever opens that door next, which isn't always the person who booked the service.

A reminder like this outlives a lot of ownership. Sell the car with the sticker still in place and
the new owner inherits a fact about it they'd otherwise have to take on trust: it was looked after,
recently, by somebody who left proof. That's worth more coming from a stranger's ballpoint than
from a seller's word.

## Can a real garage's name go on it?

A garage's name and its trading mark belong to that business, the same way
[a stamp in a service book belongs to the shop that inked it](/stories/service-book-stamps).
If a specific real garage is the point, that's a licence to ask for, not a name to borrow.

Most of the time it isn't the point. What the sticker is actually saying — the date, the mileage,
the habit of leaving a paper trail — belongs to nobody, and an invented name does that job just as
well while sidestepping the question entirely. A. VELL reads exactly as real as any name would,
because
[the garage name belongs small, at the foot, like a stamp on a manual page](/stories/mechanic-garage-shirts).

## Isn't a peeling sticker a strange thing to reproduce on purpose?

It's the opposite of a flaw. A corner lifting is what a sticker looks like after it's actually done
its job for a while, rather than the day it went on.

A flat, fresh-printed version would look like a mock-up of a reminder rather than a reminder that's
been read at every red light for months. The lift in the corner is doing the same work as the worn
crease on
[a fold-out that's been opened in a lay-by more than once](/stories/lubrication-chart-fold-out):
it's proof of use, not proof of neglect.

## Does it print well?

Yes, provided the handwriting stays handwriting-sized.

A ballpoint scrawl reads fine at the scale it was actually written at — a short date, a five-figure
number — but text that small is exactly what
[a weave floors first](/stories/bold-shapes-survive-fabric). Set the numerals a touch
larger than the real sticker would carry them, keep the printed lines and the NEXT SERVICE heading
crisp and flat, and let the ballpoint stay a single ink rather than trying to shade it.

Pale blue, cream or light grey keep the gloss-white sticker legible against the shirt. Three inks —
the printed sticker, the ballpoint, and the garage stamp — is enough.

## How do I get one made?

Describe the sticker at [JustOG](/) — the date, the mileage, and the garage name to invent. Pick a
direction, drag the crop frame, see it composited on the real garment, and it's made to order and
shipped.

Designs other people have published are in the [shop](/shop).

One corner already lifting, and it's still legible enough to matter.