Nissan Murano Z51 with variator JF017E requires special attention to the condition of the transmission fluid. Incorrect oil level is one of the main reasons for premature wear of the CVT, which on this crossover costs a tidy sum (from 250,000 rubles for a major overhaul). Unlike classic automatic transmissions, a CVT Murano does not forgive mistakes: both a lack of oil and an overflow of oil lead to belt slippage, overheating and failure of the pumps.
In this article - step-by-step verification algorithm taking into account the specifics Z51 (including restyled models 2018–2022), analysis of common errors and answers to questions that are not covered even in official manuals. For example, why you can’t trust only the dipstick, how the oil temperature affects the readings, and what to do if the level “walks” after replacement. The material is based on the experience of service technicians and analysis of cases of warranty failures under CVT in Murano in Russia.
Why check the oil in the variator Murano Z51 - not like an automatic transmission
CVT JF017E, installed on Nissan Murano Z51 (including versions with a hybrid system) is fundamentally different from traditional automatic machines. There are no planetary gears or clutches - torque is transmitted through steel belt and cone pulleys. CVT oil performs three critical functions:
- 🔹 Lubrication - reduces friction between the belt and pulleys, preventing scuffing.
- 🔹 Heat dissipation — the variator heats up more than the automatic transmission due to belt slippage (operating temperature up to
110°C). - 🔹 Power transmission — the liquid participates in the operation of the hydraulic pump, which regulates the pressure on the pulleys.
That's why checking “cold” or 5 minutes after starting will give false readings. In the variator Murano the oil should warm up to 50–80°C, and run the engine under load so that the fluid is evenly distributed throughout the system. Ignoring this rule is the #1 cause of overfilling, which leads to foam formation and pump starvation.
One more nuance - stylus design. On Z51 it has two pairs of labels: COLD (cold level) and HOT (hot). But even here there is a catch: tags HOT are relevant only at a strictly defined oil temperature, which cannot be determined by eye. Official service manual Nissan requires the use of a diagnostic scanner to monitor CVT temperature, but we will tell you how to do without it.
When and how often to check the oil in the variator
The manufacturer states that the oil in the variator Murano Z51 designed for entire service life (so-called “maintenance-free” transmission). However, this is only true for ideal operating conditions, which simply do not exist in Russia. Real recommendations:
| Operating conditions | Check interval | Notes |
|---|---|---|
| City mode (traffic jams, frequent acceleration) | Every 30,000 km | High loads on the CVT due to constant changes in gear ratio |
| Off-road/sand driving | Every 20,000 km | Dust and dirt accelerate oil oxidation, risk of overheating |
| Towing a trailer/other vehicle | Every 15,000 km | Increased load on the belt and pulleys, oil loses its properties faster |
| Extreme temperatures (below -30°C or above +35°C) | Every 25,000 km | The oil thickens or thins, hydraulics are disrupted |
In addition to scheduled checks, urgently look under the hood, if:
- 🚨 Jerks appeared during acceleration (especially at speeds of 40–60 km/h).
- 🚨 The variator “slips” when moving away (the speed increases, but the car does not move).
- 🚨Caught on fire
Check Enginewith codeP0776(faulty oil pressure solenoid). - 🚨 The oil has darkened or acquired a burning smell (checked through a dipstick).
- Only when problems arise
- Every 30,000 km
- Every 10,000 km
- Never checked
Preparing for an inspection: tools and conditions
To accurately check the oil level in the variator Murano Z51 you will need:
Flat area (slope no more than 1°) | Gloves and lint-free rags | CVT dipstick (if lost, catalog number 31397-31X00)|Diagnostic scanner (optional, for temperature control)|Transmission oil Nissan CVT Fluid NS-3 (for topping up)
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It is critical to comply three conditions:
- Oil temperature - must be in range
50–80°C. At lower temperatures, the liquid does not have time to distribute evenly throughout the system; at higher temperatures, it expands, which distorts the readings. - Engine operation — the variator must drive oil through all channels. To do this, after warming up, you need to drive 5–10 km with variable loads (acceleration, braking).
- Selector position - verification is carried out only on
P (Parking). In other modes the level will be too high or too low.
⚠️ Attention: If you recently changed the oil in the variator, the level may “walk” for the first 500 km due to incomplete filling of the hydraulic system. In this case, repeat the check after 1,000 km.
Step-by-step instructions: how to check the level correctly
Follow this algorithm to avoid errors:
- Warm up the variator.
- Start the engine and let it idle for 2-3 minutes.
- Drive 5–10 km, alternating accelerations to 60–80 km/h and gentle braking. This is necessary so that the oil is driven through the radiator and all channels.
A slope of even 2–3° will distort the probe readings by 3–5 mm, which is critical for the variator.
P and leave the engine idling.
You cannot turn off the engine - the oil will begin to cool and the level will drop.
On Murano Z51 it is located to the right of the engine (if you are facing the car), next to the battery. The dipstick has a yellow handle with the inscription CVT.
Use microfiber or special cloths. A regular rag can leave fibers that will then get into the oil.
Now look at the marks HOT. The normal level is between the upper and lower marks. If the oil is below the lower mark, topping up is required. If above the top - urgent need to drain excess.
If you do not have a scanner to check the oil temperature, use the “folk” method: after the trip, let the engine idle for 5–7 minutes. During this time, the oil in the variator will cool from 90–100°C to the required 50–80°C.
Typical mistakes and their consequences
Even experienced drivers make mistakes when checking the oil in the variator Murano Z51. Here are the most common:
- 🔴 Cold check.
Oil contracts at low temperatures and the level appears low. If you add to the marks
COLD, after warming up, overflow will occur, which leads to foaming of the liquid and loss of pressure in the hydraulics. - 🔴 Ignoring the “break-in” after replacement.
After completely changing the oil in the variator, it must go through 2-3 heating/cooling cycles to fill all the cavities. If you check the level immediately, it will be lower than real.
- 🔴 Using the wrong oil.
Only Nissan CVT Fluid NS-3 (catalog number
KLE52-00004). Other liquids (including NS-2) have a different viscosity and additives, which leads to belt slippage. - 🔴 Check with the engine off.
After stopping the engine, the oil flows into the pan, and the level on the dipstick will be lower than actual. This is fraught with underfilling and oil starvation of the pump.
⚠️ Attention: If after adding oil to normal after 500–1000 km the level drops again, this is a sign leaks (seals, radiator) or overheating (oil burns out). In this case, diagnostics are needed at a service station to check the pressure in the hydraulic system.
What happens if you pour oil into the variator?
Overflow of oil in the variator Murano Z51 causes it to foam due to the rotating pulleys. Foam disrupts the operation of the hydraulic pump, which manifests itself as:
- Delays when switching modes (with D on R and back).
- Jerks during acceleration due to unstable pressure on the belt.
- Overheating of the variator (temperature rises above 120°C), since foam dissipates heat worse.
In critical cases, foam can completely block the oil supply to the pulleys, which leads to belt breakage and complete failure of the CVT (repair - from 300,000 rubles).
How to add oil: nuances for Murano Z51
If the oil level is below normal, add it in small portions (50–100 ml each) with constant monitoring using the dipstick. Use only Nissan CVT Fluid NS-3 — mixing with other liquids is unacceptable. Topping algorithm:
- Heat the oil to operating temperature (as described above).
- Place the car on a level surface and leave the engine idling.
- Remove the dipstick and add oil through a funnel with a thin spout into the filler neck (it also serves for the dipstick).
- Wait 1-2 minutes for the oil to drain into the pan and check the level again.
- Repeat topping up until the level reaches the middle between the marks
HOT.
After topping up necessarily:
- 🔧 Drive 5–10 km with variable loads.
- 🔧 Check the level again after 500 km.
- 🔧 Inspect the area under the car for leaks (especially if the oil drained quickly).
Never add oil by eye or according to the COLD marks. Overfilling even 200-300 ml can cause foaming and failure of the variator.
Oil related signs of CVT malfunction
If you ignore checking the oil, the CVT Murano Z51 “signals” problems with the following symptoms:
| Symptom | Probable Cause | What to do |
|---|---|---|
| Jerking during acceleration (especially at speeds of 40–60 km/h) | Low oil level or degradation (loss of viscosity) | Check the level, change the oil if necessary |
Delay when switching from D on R (1–2 seconds) |
Oil foaming due to overflow or air entry | Drain the excess, check the system for leaks |
| Hum or whistle when driving | Wear of pulley bearings due to oil starvation | Diagnostics at a service station, replacement of pulleys possible |
Lights up Check Engine with code P0776 |
Low oil pressure in the hydraulic system | Check the oil level, condition and pump |
If you notice any of these symptoms, do not delay diagnosis. CVT JF017E has a “domino effect”: one malfunction quickly leads to others. For example, belt slippage due to low oil pressure leads to overheating, and overheating leads to pulley deformation.
FAQ: answers to frequently asked questions
Can NS-2 oil be used instead of NS-3?
No. Nissan CVT Fluid NS-2 has a different viscosity-temperature characteristic and is not compatible with CVTs Murano Z51. Its use will lead to belt slippage and accelerated wear of the pulleys. The only acceptable oil is NS-3 (catalog number KLE52-00004).
How to check the oil level if there is no dipstick?
On some versions Murano Z51 (for example, for the US market) there is no dipstick - instead there is a control plug on the pan. To check the level:
- Warm up the variator to operating temperature.
- Place the car on a lift or inspection hole.
- Unscrew the control plug (located on the CVT pan).
- If the oil starts to drip, the level is normal. If not, topping up is required through the filler neck (it is closed with a plug next to the battery).
This method requires experience, so it is better to contact the service.
What to do if the oil in the variator turns black?
Blackening of the oil indicates its critical degradation (oxidation, carbon deposits) or ingress of wear products (metal shavings). In this case:
- Required complete oil change with washing the pan and replacing the filter (catalog number
31726-1XF0A). - If the oil has a burning smell, diagnostics of the pulleys and belt for wear is required.
- After replacement, check the level every 1,000 km for the first 5,000 km.
Ignoring blackened oil will lead to jammed pulleys or belt breakage.
Is it possible to change the oil in the variator yourself? Murano Z51?
Theoretically yes, but not recommended no experience. Reasons:
- For a complete replacement, you need to drain the oil from the radiator and hydraulic system, which requires special equipment.
- Risk of dirt or lint getting into the variator due to improper flushing.
- On Murano Z51 after replacement, it is necessary to reset the variator adaptations via a diagnostic scanner (for example, Consult-III Plus).
If you still decide to change it yourself, use only original consumables and follow replacement instructions taking into account the nuances for JF017E.
How much oil is needed for a complete change in the variator Murano Z51?
The total volume of oil in the system is 9.5 liters. However, with a complete replacement it goes away:
- 6.5–7 liters - when draining through the sump plug.
- 8–8.5 liters — when replacing with radiator flushing (by replacement method).
For a partial replacement (drain/fill), 4–5 liters are enough, but this is a temporary measure - a complete replacement is recommended every 60,000 km.