Selecting the right oil and oil filter for your Mitsubishi GTO/3000GT is incredibly important. Additionally, it is also very important to change both the engine oil and oil filter at regular intervals to keep your GTO/3000GT in tip-top condition.
With this being the case we have put together a quick guide on the best engine oil and oil filter for a Mitsubishi 3000GT, and when you should change these parts.
Note: we will be using the 3000GT name for the rest of this article. Additionally, much of this information also applies to the Dodge Stealth as well as that car is essentially a rebranded 3000GT. Make sure you read our Mitsubishi 3000GT/GTO buyer’s guide for more information on getting yourself a great example of this car, and how to maintain it properly.
What Engine Oil Weight Should Be Used in a Mitsubishi 3000GT?
It can be hard to find a straight answer to this question as many owners have differing opinions on what is best for an aging 3000GT. The engine oil your Mitsubishi 3000GT needs will also depend on several different factors from the temperature of the environment that your car is located in to whether it has any modifications, and more.
If you are wondering how the oil classification system works, here’s a quick explanation. The front number/letter of the “XW-XX” classification relates to the oil’s viscosity at -17.8 degrees Celsius (0 degrees Fahrenheit). A lower number here indicates that the oil will thicken less in cooler temperatures.
The two numbers at the end (XX) indicate the viscosity of the oil at 100 degrees Celsius and represent the oil’s resistance to thinning at high temperatures.
If we compare a 5W-30 grade oil vs a 10W-30 grade we will find that the former thickens less in colder weather. However, a 5W-30 grade will thin out quicker at higher temperatures than a 5W-40 grade oil for example.
In essence, this means that an oil with a lower winter viscosity (XW) will usually be better for your 3000GT in cooler months of the year (or if you live in an area that is cold for much of the year). For those in hotter places an oil with a higher viscosity at 100 degrees Celsius is usually a better option.
So, What Is the Best Engine Oil for a Mitsubishi 3000GT
The top three engine oil weights recommended for the 3000GT are 0W-40, 5W-40 and 10W-40. Running a really thin oil can cause problems in a 3000GT, so stick with slightly thicker engine oils like the ones we just recommended.
Our Recommendations for the Best Engine Oil for a Mitsubishi 3000GT
Below you can find our recommended engine oils for the 3000GT/GTO:
Mobil 0W-40 Synthetic Motor Oil – Best for General Use & Colder Starts
Mobil’s 0W-40 Synthetic Motor Oil comes highly recommended for the 3000GT and is readily available in most places/countries. With a low winter viscosity, this oil will also be an excellent choice for those who need a bit more protection during colder starts.
Castrol Edge 5W-40 Full Synthetic Motor Oil
Castrol’s Edge 5W-40 Full Synthetic oil is an excellent choice if you are looking for a 5W-40 engine oil. For most climates there really isn’t much of a difference between a 5W-40 such as this one from Castrol and a 0W-40 engine oil like the one above (except in really cold environments).
Fuchs Titan Race Pro S 5W-40 – Good Option for European/UK Based Owners
Fuchs is known as one of the best in the business and their Titan Race Pro S 5W-40 is an excellent choice. They also produce a good quality 10W-40 engine oil as well and some 3000GT/GTO owners even use their 10W-50 engine oil for track or modified cars.
There are loads more oils out there that will be perfectly suited to a 3000GT/GTO and this short list is just a taste of some of the best.
When Does the Oil Need to be Changed on a Mitsubishi 3000GT?
Now that we have taken a look at the best engine oils for a Mitsubishi 3000GT, let’s take a look at when you should replace the engine oil. It is generally recommended that you replace the engine oil at least every 7,000 km (4,500 miles) for turbocharged models and every 12,000 km (7,500 miles) for naturally aspired versions.
Many owners will change the engine oil more frequently than what is listed above (especially for naturally aspirated models).
If you do not drive your 3000GT that much you should replace the engine oil every 6 – 12 months. The reason for this is because old oil that sits at the bottom of a 3000GT’s crankcase will break down overtime in the presence of contaminates such as dirt and gas.
For those wondering if they can go a bit further between oil changes (or they are going too far), it is possible to send the old oil to a laboratory who can assess its condition. They can then tell you if the oil can go further between changes or if you need to change it more frequently.
How Much Oil is Needed for a 3000GT?
|Model||Engine||Capacity (litres)||Filter Capacity (litres)|
|3000GT VR-4 / GTO Twin-Turbo||6G72T (DOHC)||4.6 with oil cooler filter||0.3|
What is the Best Oil Filter for a Mitsubishi 3000GT?
The original OEM oil filter for the 3000GT has a part number of MD352626. While these can still be found in some places, a newer version of the filter has a part number of MZ690116. However, it is believed that the newer version of the OEM filter is manufactured different to the original one that came with the car.
When Should the Oil Filter Be Changed?
It is recommended that you replace the oil filter with every oil change. Oil filters are cheap so it is better to do this frequently. If you replace the oil in your car very frequently than you can probably get away with changing it every second oil change, but this is not usually recommended.
If you are interested in buying a Mitsubishi 3000GT/GTO make sure you check out our buyer’s guide here.