Avoid These Key Mistakes When Changing Your Car’s Oil

Keeping your engine healthy starts with a simple task: changing the oil. Yet even seasoned drivers can slip into habits that compromise performance or damage the machine. Below are the common mistakes to avoid when changing car oil, along with practical tips to keep your engine running smoothly.

Know the Right Oil for Your Vehicle

Every car manufacturer recommends a specific oil viscosity and type for optimal performance. Using the wrong oil can lead to:

• Reduced fuel economy
• Increased engine wear
• Poor lubrication during temperature extremes

Check your owner’s manual or the label on the oil filler cap for the exact specification—whether it’s 5W‑30, 10W‑40, or a fully synthetic blend.

Skip the Oil Filter Renovation

After you drain the old fluid, you’ll notice sludge collecting around the filter. A common oversight is simply raking that sludge back into the engine. Don’t do it!

• Use a clean, disposable scraper to remove sludge from the filter housing.
• Replace the filter with a fresh one—old filters can clog and reduce oil flow.

Why a Fresh Filter Matters

A new filter ensures optimal oil flow and protects the engine from harmful contaminants. Reusing an old filter can trap debris and compromise the engine’s longevity.

Don’t Overfill or Underfill

Finding the correct oil level is a common mistake. Overfilling can create excess pressure, while underfilling can cause oil starvation.

• Let the car sit for a few minutes after a fill, then use the dipstick to check the level.
• Fill to the "olding" line, not the “full” line, unless the engine is cold.
• Always add oil in small increments—about half a quart at a time—to avoid overfilling.

Ignore the Oil Change Intervals

Many drivers wait until the oil fails or a maintenance schedule marks a “next change” date, which can be misleading.

• Check your vehicle’s service schedule for mileage or time-based intervals.
• Consider shorter intervals if you frequently drive in heavy traffic, dusty conditions, or extreme temperatures.

Neglect the Oil Drain Plug Seal

When you remove the drain plug, the gasket can become dislodged or warped. A common voucher is to leave the old gasket in place, which can lead to leaks.

• Replace the drain plug gasket each time you change oil.
• Hand‑tighten the plug first, then use a torque wrench to achieve the manufacturer’s specification—usually around 20–25 ft‑lb.

Rushing Through the Process

Speeding through an oil change can cause you to overlook a critical step. Setting a calm pace ensures you:

• Use Benito Temperature to keep the engine from overheating during a drain.
• Check for leaks after the first few minutes of operation.
• Observe the filter for any hairline cracks or damage.

Don’t Forget the Engine’s Coolant System

While you’re in the garage, check the coolant level. Many owners neglect this after an oil change, and a low coolant can cause%n engine overheating.

• Flush the coolant if it’s dirty or has been in the system for an extended period.
• Replace the coolant according to the manufacturer’s schedule.

Use the Correct Tools and Clean Work Area

Using a flat‑head screwdriver on a hex socket can strip the drain plug. A clean work area reduces the chance of contaminating the new oil.

• Use a socket wrench with the correct size for the drain plug and filter.
• Wipe down the oil filter housing before inserting the new filter.
• Place a catch pan that’s large enough to hold the entire discharge of oil.

Plan for a Quality Oil Filter

Choosing a low‑quality filter can introduce contaminants into the engine. Stick with reputable brands or OEM filters to stay safe.

• Check the filtration rating—look for “high‑performance” or “full‑synthetic” if your engine requires it.
• Read reviews to ensure the filter doesn’t clog quickly.

Summing It Up

Changing car oil doesn’t have to be a nightmare. By avoiding these common mistakes—using the right oil, installing a fresh filter, maintaining proper levels, and paying attention to the details—you’ll keep your engine in top shape and save on costly repairs down the road. Treat oil changes like a routine health check: regular, careful, and thorough.