CVT transmission on a car Nissan Murano is a complex and high-precision unit that requires special attention from the owner. Many car owners mistakenly believe that the transmission fluid is filled for its entire service life, but operating practice shows the opposite. Regular oil change in the variator Nissan Murano - this is not just a recommendation, but a critical condition for extending the life of the gearbox.
Ignoring maintenance regulations leads to rapid wear of the cones and belt, the appearance of vibrations and even complete failure of the unit. It is especially important not to miss the moment when it is necessary to replace not only the fluid, but also the filters. In this article, we will analyze the service process in detail, highlight the key stages and warn against common mistakes that can cost you tens of thousands of rubles.
Why changing the oil in the Nissan Murano CVT is critical
CVT transmission Nissan Murano works under extreme conditions of constant friction and high temperatures. Special liquid NS-3 performs not only the function of lubrication, but also serves as the working fluid of the valve body, transmitting pressure to change the gear ratio. Over time, the properties of the oil degrade: it oxidizes, loses viscosity and becomes contaminated with metal shavings.
The accumulation of wear products leads to clogging of the thin channels of the valve body and overheating of the clutches. If you drive your vehicle in city traffic or frequently tow trailers, the replacement interval should be shortened. The lack of fresh oil leads to the fact that the belt begins to slip, causing a characteristic hum and jerking when moving.
Timely maintenance avoids costly repairs. Changing the oil in the variator Nissan Murano with filter replacement costs significantly less than a major overhaul or replacement of the complete unit. Saving on regular maintenance is a false economy, which often ends in complete failure of the transmission.
Preparing for replacement: tools, oil and filters
Before you start work, you need to prepare everything you need. For quality service you will need original fluid Nissan CVT Fluid NS-3 or its certified equivalent that meets the specification. Using the wrong fluid can cause seal failure and altered friction characteristics.
Be sure to buy a replacement coarse filter, which is installed in the oil pan, and a fine filter, integrated into the valve body. Also, don’t forget about a new pan gasket, as the old one often becomes deformed when removed. From the tools you will need wrenches for 10, 12, 14, a torque wrench, a funnel with a long hose and a container for draining the waste.
- 🔧 Set of sockets and ratchets for removing the pallet
- 🛢 Original oil Nissan NS-3 (about 5-6 liters)
- 🛡 New variator filter (coarse cleaning)
- 📄 Oil pan gasket (original or high-quality analogue)
- 🧤 Gloves and rags to protect hands and keep them clean
Make sure the car is on a level surface. This is critical to accurately checking fluid levels. If you plan to change the valve body filter, you will also need a special key to remove its cover, if the design of the car allows it.
⚠️ Attention: Do not use universal transmission fluids. CVT Nissan Murano requires strictly specific friction properties, which only NS-2 or NS-3 fluids have. An error in choice can lead to belt slipping after just a couple of thousand kilometers.
- Less than 100,000 km
- 100,000 - 150,000 km
- More than 150,000 km
- I don't know for sure
Step-by-step instructions: draining the old oil and replacing the filter
The process begins with warming up the engine to operating temperature. This is necessary so that the oil becomes less viscous and pours out completely. Start the engine, turn on the mode Drive, then Reverse, holding each position for a few seconds, and turn off the engine again.
Remove the crankcase protection and locate the drain plug on the variator pan. Place a container under the drain hole and carefully unscrew the plug. Be prepared for a hot stream of oil to pour out. Let the liquid drain completely without rushing.
After draining, you need to unscrew the bolts securing the pan. Do this gradually, starting from the perimeter, so as not to damage the aluminum body. The pan will stick to the gasket, so use a flathead screwdriver to gently pry it off, but be careful not to damage the adjacent surfaces.
- 🔩 Unscrew the pan bolts crosswise for uniform removal
- 🗑 Drain the remaining oil by tilting the pan in different directions
- 🧽 Thoroughly clean the magnets on the tray from metal shavings
- 🔄 Remove the old filter and install a new one
Pay special attention to the magnets at the bottom of the tray. Metal dust and shavings accumulate on them. If the magnets are covered with a thick layer of “metallic mess”, this is a signal of increased wear of the internal components. Clean them thoroughly with solvent or gasoline until shiny.
☑️ Preparing for an oil change
Important nuances of washing and installing a new gasket
Many craftsmen recommend washing the internal cavity of the pan and the variator housing itself before installation. Use a special carburetor cleaner or gasoline to remove old gasket residue and dirt. Make sure there are no foreign objects left in the crankcase.
Installing a new gasket requires care. If you are using sealant instead of a new gasket, apply it in a thin layer and let it dry before reassembling. However, the original gasket is preferable, as it provides a perfect fit without the risk of distortion.
Tighten the pan bolts to the torque recommended by the manufacturer. Typically this value is around 10-12 Nm. Using a torque wrench will help avoid overtightening, which can damage the threads in the aluminum crankcase.
What to do if there is no original gasket?
If the original gasket is not available, you can use a high-quality analogue or high-temperature silicone sealant. When using sealant, apply it in a continuous line around the perimeter, avoiding getting inside the crankcase. Allow the sealant to dry for 10-15 minutes before installing the pan.
⚠️ Attention: Never use old bolts if they show corrosion or stripped threads. This can lead to oil leakage while driving, which can lead to overheating and damage to the variator. Always check the condition of the fasteners.
Checking the oil level: methodology and temperature conditions
After filling in new oil and assembling the pan, you need to check its level. This is the most critical stage, since an excess or lack of fluid is detrimental to the variator. The check is carried out with the engine running and the transmission warm.
The optimal oil temperature for checking is from 50°C to 60°C. On modern models Nissan Murano this information can be displayed on the dashboard via a diagnostic scanner. If there is no scanner, warm up the box by driving for 10-15 minutes in quiet mode.
Open the hood and locate the inspection plug on the side of the variator housing. Remove the cover and unscrew the plug. Oil should leak slightly from the hole. If fluid does not flow, then the level is low and needs to be topped up. If the oil flows in a strong stream, then the level is too high.
- 🌡 Warm up the oil to range
50-60°C - ⚙️ Start the engine and switch the selector through all modes
- 💧 Check the level through the inspection hole with the engine running
- 🛑Tighten the plug with a moment
35-40 Nmwith the engine running
Tighten the inspection plug until no oil flows from it, and immediately tighten it with a torque wrench. This must be done with the engine running, since when stopped, the oil flows into the sump and the level will seem lower than real.
An accurate check of the oil level is only possible with the engine running and the fluid temperature 50-60°C. Ignoring this condition will result in incorrect levels and damage to the variator.
Replacement frequency and signs of wear of the variator
Official regulations Nissan often indicates a “lifetime” replacement, but real operating experience suggests the need for replacement every 60,000 km. In the conditions of Russian roads, with traffic jams and bad roads, it is better to reduce the interval to 40,000 - 50,000 km.
There are several signs that the oil in the variator is already in need of replacement. If you feel jerking when switching modes, hear a hum or vibration that increases during acceleration, immediately check the level and condition of the fluid.
The color and smell of the oil are also indicators. Fresh oil NS-3 has a red color and a specific smell. If the oil becomes dark, black or has a burning smell, this means that it has already lost its properties and requires urgent replacement.
| Parameter | New oil | Old oil (critical) | Recommendation |
|---|---|---|---|
| Color | Bright red | Dark brown or black | Replace immediately |
| Smell | Specific, pleasant | Burnt, burnt | Replace + diagnostics |
| Impurities | None | Metal shavings, sand | Filter replacement, diagnostics |
| Viscosity | Tall, transparent | Low, cloudy | Replace |
Typical mistakes when servicing a variator
One of the most common mistakes is using low-quality or counterfeit oil. The auto parts market is full of counterfeit products that cannot withstand temperature loads. Always buy oil from trusted suppliers and check the holograms on the canisters.
Another mistake is not changing the oil completely. With a partial replacement, only about 40-50% of the volume is updated. Complete replacement requires a displacement method, which is more complex and expensive. However, if you change your oil regularly, a partial change with a filter is quite acceptable and effective.
- ❌ Using NS-2 oil instead of NS-3
- ❌ Ignoring replacement of the coarse filter
- ❌ Incorrect tightening of pallet bolts
- ❌ Checking the level when the engine is cold
Don't neglect diagnostics. Before changing the oil, it is recommended to connect a scanner and look for errors in the memory of the variator control unit. Sometimes the presence of errors requires not just an oil change, but adaptation or repair of the valve body.
⚠️ Warning: If the Check Engine light or transmission light is illuminated on your dashboard, do not try to solve the problem with an oil change alone. First, run a full computer diagnostic to identify the cause of the problem.
Keep receipts for oil and filter purchases, and record mileage at the time of replacement. This will be useful when selling a car, since the presence of a full maintenance of the variator significantly increases its market value.
Results: why you shouldn’t postpone replacement
Regular oil change in the variator Nissan Murano with filters is a guarantee of a long and trouble-free life for your car. The cost of the procedure is not comparable to the cost of repairing or replacing the gearbox. Neglecting this simple rule can lead to serious financial losses.
Remember that the CVT is the heart of your car in terms of dynamics and comfort. By taking care of it, you ensure smooth movement and no unexpected breakdowns on the road. Don’t wait for jerking or humming to appear; change the oil regularly, as required by operating logic.
By following our recommendations, you can perform the procedure yourself or supervise the work of the service technicians. The main thing is not to skimp on the quality of materials and follow the technology. Then yours Nissan Murano will serve you for many years, giving you driving pleasure.
Changing the oil in a Nissan Murano variator with a filter is a mandatory procedure every 40-60 thousand kilometers, which saves the gearbox from costly repairs.
How often do you need to change the oil in the Nissan Murano CVT?
The recommended replacement interval is 60,000 km for quiet use and 40,000 km for severe conditions (traffic jams, towing, off-road driving).
Is it possible to change the oil using the displacement method (hardware change)?
The displacement method is only permissible on serviceable CVTs with a mileage of up to 100,000 km. On older units, this can wash away dirt and clog the valve body channels. Safer and more reliable - partial replacement with a filter.
Which oil is better to use: original or analogue?
It is strongly recommended to use only original oil Nissan CVT Fluid NS-3. Analogues may have similar characteristics, but often cannot withstand the extreme loads characteristic of Jatco CVTs.
What to do if jerking occurs after changing the oil?
The oil level may be incorrect or the adaptation procedure has not been performed. Check the level with the engine running and temperature 50-60°C. If the problem persists, computer diagnostics are required.
Do I need to change the valve body filter every oil change?
The coarse filter (in the pan) must be changed. The fine filter (in the valve body) is changed after a mileage of more than 100,000 km or if there are problems with the operation of the gearbox, since replacing it requires removing and disassembling the valve body.