Table of Contents
Crush Washers: The Unsung Heroes of Oil Changes
When you think of an oil change, you probably picture a quick swap of a dirty filter and a fresh bottle of motor oil. But the small metal washers that sit between the drain plug and the oil pan play a crucial role in keeping your engine lubricated and protected. These are called crush washers, and they are made from soft metals like copper or aluminum. The softness allows the washer to deform slightly when the drain plug is tightened, creating a tight seal against the oil pan. The flat side of the washer presses against the flat head of the drain plug, while the beveled side meets the beveled edge of the oil pan. As the plug is tightened, the washer is compressed, conforming to the pan’s surface and preventing leaks.
Choosing the Right Parts: Don’t Let a Mismatched Filter Ruin Your Engine
One of the most common mistakes during an oil change is using a filter that doesn’t match the vehicle’s specifications. The filter’s part number is usually printed on the filter itself and on the packaging. Look for the series code—often starting with "PA"—and the manufacturer’s code, such as "OX347". The last two digits can indicate the production date or batch. If the part number on the filter doesn’t match the part number on the package, you’re likely looking at a different filter that may not fit properly or may not provide the correct filtration rating. Always compare the numbers on the filter and the box before you begin the swap.
Protecting Yourself and the Vehicle: From Arm Protectors to Oil Flow Control
Oil changes can be messy, especially when you’re working in tight spaces under the hood. A disposable arm protector—essentially a thin, inexpensive sleeve that slides over your forearm—can keep your skin free from scratches and oil splatter. It’s a small investment that saves you time cleaning up afterward. Some mechanics also use a malible, a flexible, reusable sleeve that can be shaped to fit around components. By placing the malible over the drain plug or the oil pan, you can direct the flow of oil as it drains, preventing drips onto the engine block or the surrounding area. This technique requires a bit of ingenuity, but it keeps the work area cleaner and reduces the risk of oil getting onto the engine’s delicate parts.
Cleaning Up Properly: Why Kitchen Paper Towels Are a Bad Idea
It might seem harmless to wipe up oil with a kitchen paper towel, but these towels are designed for food use and can leave behind fibers that clog the oil filter or damage the engine’s internal surfaces. Instead, use a dedicated automotive rag or a disposable sleeve. If you do need to clean up, make sure the cloth is oil‑resistant and free of contaminants. After the job, dispose of used rags in a sealed container to prevent accidental spills.
Testing Your Oil: Get a Professional Report
Many people assume that a visual check of the oil’s color and consistency is enough. However, a lab test can reveal the presence of metal particles, water contamination, or the breakdown of oil additives. By sending a small sample to a service like Blackstone, you can receive a detailed report that tells you how your oil is performing and whether it’s time for a change. This proactive approach can extend the life of your engine and catch problems before they become costly.
Reusing the Old Oil Container: Save Space and Reduce Waste
When you finish draining the old oil, don’t discard the container. Instead, pour the used oil back into the same container you used for the new oil. When you drop the container off at a service station or a recycling center, you can reuse it for future oil changes. This practice saves space in your trash can, reduces the number of plastic containers you need to buy, and makes the disposal process more efficient. Many stations, such as O’Reilly’s, accept used oil containers and will clean them for you, so you don’t have to wait for a new container to be returned.
Putting It All Together: A Smooth, Leak‑Free Oil Change
By paying attention to the small details—using the correct crush washer, matching filter part numbers, protecting your arms, controlling oil flow, avoiding kitchen towels, testing your oil, and reusing containers—you can perform an oil change that is not only quick but also clean, safe, and environmentally friendly. These practices keep your engine running smoothly and give you peace of mind that you’re doing the right thing for your vehicle and the planet.