2005 Acura MDX Engine Oil Capacity

Curious as to how much engine oil your 2005 MDX needs? We’ll tell you all about it and give you some maintenance advice, too.
Written by Zachary Morgan
Reviewed by Amy Bobinger
A roomy, powerful SUV with great safety scores, the 2005 Acura MDX is a great family car—or even just a secondary vehicle to tool around in. If you want your MDX to stay in good shape, though, you’ll need to learn about its oil capacity.
Sometimes, those little lights on your dashboard just won’t stop coming. We’ve all been there—you finally get around to putting some air in your tires only to get back in your car and see the Check Engine Light. These little maintenance items can quickly start eating into your time and wallet, unless you learn to change your own oil, that is.
If you don’t know how, then don’t worry!
, the
car insurance
comparison super app, can walk you through the process of changing the oil in your 2005 Acura MDX. We’ll even show you how to save on your
Acura MDX insurance costs
, so let’s get started!

2005 Acura MDX engine oil capacity

Let’s start with the basics—how much oil does your 2005 Acura MDX need?
The 3.5-liter V6 engine that powers the MDX has an oil capacity of 4.5 quarts, or 4.3 liters. Make sure that you never confuse the engine’s displacement with its oil capacity, as these are two completely different measurements and are not interchangeable.
Your engine’s displacement indicates the amount of oil that the cylinders need to work properly, while the oil capacity is simply the amount of oil that you need to use when performing an oil change.

What kind of oil does a 2005 Acura MDX need?

Now that you know the proper amount of oil to put in your engine, it’s time to cover the exact type of oil that you’ll need to use. Different engines use different types of oil, so don’t assume that all the jugs in the auto parts section have the same stuff in them. For a 2005 MDX, Acura recommends the use of 5W-20 motor oil that features the American Petroleum Institute (API) Certification Seal. 
You can actually learn a lot about the oil itself by looking at the classification, because the letters and numbers have a specific meaning. For example, the W means winter, while the numbers tell you about the oil’s thickness, or viscosity. The 5 indicates that this oil stays thin in very cold temperatures, while the 20 shows that it also keeps a low viscosity at very high temperatures.
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How often to change oil on a 2005 Acura MDX

It’s almost time to talk about
changing your oil
, but first we’ll go over how often you should do so.
Traditional oil typically needs to be changed every 3,000 to 5,000 miles, but synthetic oil can go as far as 7,500-10,000 miles. For best results, Acura recommends that you split the difference and swap out your oil every 5,000-10,000 miles.
Nevertheless, you should get into the routine of checking your oil semi-regularly. One good method would be to check either once a month or every other time you fill up with gas.
Also, watch out for these signs that your car is in need of an oil change:
  • The engine starts making strange noises
  • You smell something unusual, like oil, smoke, or burning
  • You notice changes in your vehicle’s performance

How to change your oil and oil filter

Nothing else to it but to do it, it’s time to get in there and change that oil! First, you’ll need to gather a few tools so you can remove the old filter, specifically a socket wrench, drain pan, and filter wrench. Of course, you’ll also need five quarts of 0W-20 motor oil.
Begin by allowing the engine to idle for a few minutes (five should be plenty), so that the oil can warm up a little bit. Then, turn off the engine and follow these steps:
  • Remove the oil fill cap
  • Take off the oil drain bolt and washer
  • Let the old oil leak into the drain pan 
  • Remove the old oil filter and keep letting the oil drain 
  • Install the new filter
  • Use a new washer to replace the old drain bolt and tighten it to 29 lb-ft
  • Top off the engine with your new oil and replace the fill cap 
Once all that is done, warm up your engine for about 30 seconds, then use your dipstick to make sure that you put enough new oil into the engine. Then, turn the engine back on and let it idle for a few minutes, keeping an eye out for leaks while you’re doing so. When you see the
oil pressure light
on the dashboard turn off, you’ll know you did it right.
Last, but certainly not least, is cleanup. Never, ever, ever pour the dirty oil on the ground or throw it in the trash! Always put the dirty oil in a sealed container and bring it to the nearest recycling center. 

Don’t forget regular insurance policy maintenance

Well done! Changing your own oil is not something that many people have the time or willingness to do, but it's a great way to save money. Not to mention, your MDX will thank you for it.
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