How to Change Oil on Your Mazda 626: A Step-by-Step Guide

Getting Started With Your Oil Change

Changing your own oil is a task many Mazda 626 owners can do at home with basic tools and some patience. This guide walks you through the process so you understand what's involved in performing this routine maintenance yourself.

Before you begin, gather what you'll need:

• New oil (check your owner's manual for the correct type and amount)
• A new oil filter
• An oil drain pan
• A wrench or socket set
• An oil filter wrench
• Jack and jack stands (if needed for clearance)
• Rags or paper towels
• Safety glasses
• A flashlight or work light
• Newspaper or cardboard to protect your work surface

Having everything ready before you start makes the job go more smoothly and keeps you from having to stop halfway through.

Key Takeaways

• Warm oil drains better than cold oil, but let the engine cool slightly to avoid burns
• Always use jack stands if you raise your vehicle—never rely on a jack alone
• The oil drain plug is located on the bottom of the oil pan underneath your engine
• Apply a thin layer of new oil to the oil filter gasket before installation
• Check your oil level with the dipstick after adding new oil
• Dispose of old oil properly at an auto parts store or service station
• Most 626 models benefit from an oil change every 3,000 to 5,000 miles

Preparing Your Vehicle

Start by warming up your engine for a few minutes. Warm oil flows better than cold oil, which means it drains more completely. Then turn off the engine and let it cool for a minute or two—you don't want to burn yourself on hot oil or engine parts.

Park on a level surface. If you need more room under your 626, use a jack to raise it carefully. Always use jack stands for safety. Never rely only on a jack to hold your vehicle up while you work underneath it. A jack can fail, and the consequences can be serious.

Put on your safety glasses before you get under the car. Even though this is a straightforward task, protecting your eyes is important.

Draining the Old Oil

Locate the oil drain plug underneath your engine. It's usually a bolt on the bottom of the oil pan. You may need to use your flashlight to see it clearly. Place your drain pan underneath it to catch the old oil.

Using your wrench, turn the drain plug counterclockwise to loosen it. Once it's loose enough, finish unscrewing it by hand (carefully—the oil may still be warm). Let the old oil drain completely into the pan. This may take several minutes, so be patient. The more oil you drain out, the cleaner your engine will be.

Once the oil stops dripping, wipe the drain plug clean with a rag. Screw it back in by hand first, then tighten it with your wrench. Don't overtighten it—you just want it snug enough that it won't leak.

Replacing the Oil Filter

Find your oil filter. On the 626, it's typically on the side of the engine. Place your drain pan underneath it to catch any remaining oil that may drip out when you remove it.

Use your oil filter wrench to turn the filter counterclockwise until it comes loose. Unscrew it the rest of the way by hand. Be careful—there may still be some warm oil inside the filter.

Before installing the new filter, apply a thin layer of new oil to the rubber gasket (the ring) on top of the filter. This helps create a good seal and makes it easier to remove the filter next time. Screw the new filter on by hand until the gasket touches the engine, then turn it about three-quarters of a turn more. Don't use the wrench to tighten it—hand-tight is correct.

Adding New Oil

Locate the oil filler cap on top of your engine. Twist it counterclockwise to remove it. Set it aside where it won't get dirty or lost.

Slowly pour the new oil into the opening. Pour in about three-quarters of the amount your manual recommends, then check the dipstick. Pouring it slowly gives you better control and prevents spilling.

Pull out the dipstick, wipe it clean with a rag, reinsert it fully, then pull it out again to check the level. The oil should be between the minimum and maximum marks on the stick. Add more oil a little at a time until you reach the correct level. It's better to add oil gradually than to overfill it.

Replace the oil filler cap by turning it clockwise until it's snug.

Final Steps

Start your engine and let it run for about 30 seconds. This circulates the new oil through the engine and helps the new filter fill with oil. Turn it off and wait a minute, then check the dipstick again to make sure the level is still correct. Sometimes the level drops slightly after the first run as the new filter fills up.

Dispose of your old oil properly. Many auto parts stores and service stations will take used oil for free or a small fee. Some recycling centers also accept it. Never pour it down the drain or into the ground—used oil is harmful to the environment.

Keep track of when you changed your oil. Most vehicles benefit from an oil change every 3,000 to 5,000 miles, though some newer models can go longer between changes. Check your owner's manual for your 626's recommended schedule. You can write the date and mileage on your oil filler cap with a marker so you remember when the next change is due.

Frequently Asked Questions

How do I know what type of oil to use in my Mazda 626?

The correct oil type and viscosity for your 626 is listed in your owner's manual. Different model years may require different oil weights. The manual will tell you whether to use conventional oil, synthetic oil, or a blend. Using the wrong type of oil can affect your engine's performance and longevity, so it's worth taking the time to check your manual before you buy oil.

What should I do if I spill oil while changing it?

If you spill oil on the ground or driveway, clean it up right away. You can use cat litter or an absorbent material made for oil spills to soak it up. Once the oil is absorbed, sweep it into a pile and dispose of it properly. Never leave spilled oil on the ground, as it can harm soil and groundwater. If you spill oil on your clothes or skin, wash the area with soap and water.

Can I check my oil level while the engine is running?

No, you should always check your oil level when the engine is off and has been sitting for a few minutes. If you check it while the engine is running or immediately after turning it off, the reading won't be accurate because the oil is still circulating through the engine. Wait at least a minute after turning off the engine before checking the dipstick for the most accurate reading.

How often should I change the oil in my 626?

Most Mazda 626 models benefit from an oil change every 3,000 to 5,000 miles. However, the exact interval depends on your model year, the type of oil you use, and your driving habits. Check your owner's manual for the manufacturer's recommendation for your specific vehicle. If you drive mostly on highways, you may be able to go longer between changes than if you do a lot of city driving.