How often should I change my oil?

2 minute read · Checked October 2026 · Written at the Harkness counter, Coppervale, BC

The short answer

Change your oil when your owner's manual says, at its distance limit or its time limit, whichever comes first. If your dash shows an oil life reading, follow that. Short trips in the cold, gravel roads and towing all count as harder use, so most Kootenay drivers belong on the shorter schedule.

Where does the right interval come from?

It comes from the people who built your engine. Your owner's manual or maintenance guide lists an oil change by kilometres and by months. The change is due at whichever one you reach first. A car that sits a lot still needs fresh oil on the calendar, even if the odometer barely moved.

Many manuals also split driving into two kinds. One schedule is for easy driving. The other is for harder use and calls for more frequent service. Carmakers name it differently. Some say severe conditions and some say special operating conditions. The idea is the same.

How often should I change my oil if I drive in the Kootenays?

Read the list of hard conditions in your manual, then picture a normal week here. Subaru Canada's booklet names low temperatures and dusty conditions. Toyota's maintenance guide names short trips below freezing, rough or salt-covered roads, unpaved roads and towing. That reads like a Kootenay winter and a Kootenay summer.

Short trips. Two kilometres to the post office at minus twenty never lets the engine get fully warm.
Gravel and dust. A weekend up a Forest Service Road counts, and so does a dusty driveway.
Towing and grades. A trailer behind you on the long climbs of Highway 3 works the oil hard.
Salt and brine. Toyota's list includes salt-covered roads. Most of a Kootenay winter qualifies.

What does the oil life reading on my dash mean?

Many newer cars count down oil life for you. Honda's owner's manual says the system works out remaining oil life from engine operating conditions and shows it as a percentage. Cold starts and short trips pull that number down faster. When the reading says it is time, book the change. We reset the reading after every oil service.

Should I check the oil between changes?

Yes. Engines use a little oil between changes, and some use more as they age. Mazda's warranty booklet asks owners to check the level at least once a month. Park on level ground, shut the engine off, wait a few minutes, then pull the dipstick. Some newer cars have no dipstick and show the level on the dash instead. Your manual explains how.

Our oil and filter service starts from $89, and the oil goes in at the grade and spec your manual calls for. While the car is on the hoist, we look at the brakes, tires, exhaust and anything leaking. If we find something, you get photos and a call. Nothing happens to your bill without your yes.

Asked at the counter

What do the numbers in 0W-20 mean?

The first number, with the W, is the winter rating. A lower number means the oil flows more easily when it is cold, which helps on a minus twenty start. The second number describes how thick the oil is once the engine is warm. Use the grade your manual lists.

Is synthetic oil worth paying for?

Many newer engines are built for a synthetic oil, and the manual says so. In that case it is the right oil for the engine. If your manual allows either kind, we can talk through the price difference before we start.

My car sits most of the winter. Does it still need an oil change?

Yes. The time limit in your manual still applies, even on low kilometres. Oil ages in the engine, and a car that only makes short trips collects moisture in its oil. Go by the months when the kilometres stay low.

Will an oil change at your shop affect my new car warranty?

Your warranty booklet sets the rules, and most ask for the right oil, on schedule, with records. Our invoice lists the date, your kilometres and the oil we used. Our guide on servicing away from the dealer covers the details.

What we checked

Subaru Canada Warranty and Maintenance Booklet, maintenance schedule and severe operating conditions · checked 2026-10-05
Toyota Scheduled Maintenance Guide, special operating conditions · checked 2026-10-05
Honda owner's manual, To Use Maintenance Minder (oil life calculated from operating conditions) · checked 2026-10-05
Mazda Canada 2024 Warranty Booklet, Your Responsibilities (check oil level monthly) · checked 2026-10-05