This is the age-old question, isn’t it? “How often do I really need to change my oil?”
Well, the truth is that almost all car companies and oil change services agree that you should change your oil every 5,000 kilometers (3,000 miles). It might seem low because cars can run on a tank of oil for much longer, but there are several reasons behind this recommendation. For starters, as you drive without changing your oil, it becomes contaminated with dirt and other elements. If the oil gets too “dirty,” it can lead to engine damage, as the dirt makes the oil abrasive, potentially damaging critical engine components like cylinder heads and pistons. By the 5,000 km / 3,000-mile mark, the oil is likely just beginning to accumulate dirt and contaminants, which can be caught early to prevent serious damage.
Another reason for this interval is that oil is the lifeblood of your car’s engine. Oil can reveal issues with the engine’s internal components. For example, if coolant leaks into the oil, it can cause significant engine damage. A routine oil change allows a mechanic to identify such problems before they worsen. By bringing your car in for an oil change, you can stay on top of potential repair issues.
The Benefits of Regular Oil Changes
Additionally, regular oil changes offer a chance for the mechanic to inspect your vehicle. As experts, they can spot problems or potential issues that you may not notice. This proactive approach could save you time and money by identifying issues before they become costly repairs.
While it’s true that some cars can go beyond the 5,000 km / 3,000-mile mark without any major issues, it’s always better to stay on schedule. Waiting too long between oil changes can lead to problems. Fresh oil ensures your engine runs more efficiently, providing maximum mileage and performance. Although it might seem tempting to push your vehicle beyond the recommended interval to save money, it could end up costing you much more in the long run.
It’s also worth noting that while engines might last longer without an oil change in “ideal” driving conditions, most people face “severe service” conditions like short trips in colder weather, stop-and-go city driving, or driving on dirt roads. These conditions put extra stress on your oil, making regular changes even more important.
Why and How Does Oil Break Down?
Heat is the biggest factor in oil breakdown. Each oil type has a heat tolerance, and the temperature at which oil starts to vaporize is called the “flash point.” Oils with a lower flash point vaporize faster, leading to oil burn-off by hot engine components like pistons. As today’s engines are smaller and run hotter, they place additional stress on the oil, causing it to degrade faster. This can leave deposits and sludge in the engine, ultimately leading to more damage.
As oil breaks down chemically over time, it loses its lubricating properties, thinning out and losing its ability to protect the engine. Oil lasts longer in cooler climates, but high temperatures cause it to degrade more quickly.
Summer and Winter Oil Types
Your car’s owner’s manual will recommend different oils for various conditions. The two primary types of oil are:
- 5W30 (for winter conditions)
- 10W30 (for summer conditions)
10W30 oil is designed for hot climates, as it doesn’t thin out as quickly as 5W30, providing better lubrication during high temperatures.
For most of Canada, 5W30 oil works year-round. It’s suitable for cooler climates, but if you have an older car, consider using 10W30 for added lubrication, especially in winter.
Costs of an Oil Change
Oil changes are relatively affordable. Quick-lube shops can change your oil for as little as $20–$25, but be aware of hidden fees. These low prices may not include all costs, and some places may not employ the best-trained mechanics.
At a regular repair shop, like Canadian Tire, expect to pay $30–$35, including the filter, labor, and taxes. This price is reasonable considering the service is performed by a professional mechanic who can also check for other car issues.
Advantages of Getting Oil Changed in a Shop
The primary reason to have your oil changed by a professional is the time saved. Shops are equipped with all the necessary tools and facilities to do the job quickly and efficiently. Why spend hours doing the job yourself when a professional can get it done in no time, ensuring it’s done correctly? Additionally, mechanics are experts who can spot potential problems you may miss, saving you time and money in the long run.
Another benefit is safety. Changing your oil at home means crawling under your car with little to no safety precautions, whereas a shop has lifts, tools, and experts to do the job safely.
What to Do with Old Oil
Throwing out used oil is no longer an option. If you choose to change your oil yourself, you must dispose of it properly at a designated disposal site. Many quick-lube shops and service stations will accept used oil for environmentally-friendly disposal.
Never pour used oil down a drain or onto the ground, as even small amounts can cause significant environmental harm.
What Happens If You Don’t Change Oil Often?
Neglecting oil changes can lead to engine damage and premature failure of vehicle components. Regular oil changes help ensure your engine runs smoothly, preventing costly repairs. If you wait too long between changes, contaminants can build up, leading to significant engine damage.
Quick Oil Tip:
Many store-brand oils, like Tech 2000 (Walmart’s brand), are made by major oil refineries like Shell or Esso. These oils are often cheaper but meet the same standards as more expensive brands. Consider using them to save money without sacrificing quality.
