Changing the oil in a Nissan Pathfinder automatic transmission: a complete guide with photos and videos

Automatic transmission Nissan Pathfinder - a complex unit that requires regular maintenance. Many owners mistakenly believe that automatic transmission oil is filled “for its entire service life,” but this is a myth: over time, the fluid loses its properties, becomes contaminated with wear products and ceases to protect parts. If you ignore replacement, the consequences can be critical - from jerks when switching to complete failure of the box.

In this article we will look at all the nuances of changing the oil in an automatic transmission Nissan Pathfinder (models R51 And R52), including the choice of original oil, tools, step-by-step instructions and common mistakes. We will pay special attention to the differences between partial and complete replacement, and also tell you how to check the oil level without special equipment. The information is relevant for petrol and diesel versions with gearboxes RE5R05A And JR710E.

When to change the oil in a Nissan Pathfinder automatic transmission: official and real terms

Manufacturer Nissan The manuals indicate that the automatic transmission oil does not require replacement, but this is only true for “ideal” operating conditions. In reality, the intervals depend on several factors:

• 📅 Official regulations: for Pathfinder R51 (2005–2012) - every 90,000 km or 6 years, for R52 (2013–2021) — 120,000 km or 8 years. But these figures are relevant only for countries with a temperate climate and high-quality fuel.
• 🌡️ Operating conditions: if you drive in traffic jams, tow a trailer, or often operate the car in hot/cold weather, the interval is reduced to 60,000–70,000 km.
• ⚠️ Signs of oil wear: jerks when switching, delays, noise in the box or darkening of the liquid on the dipstick - a signal for urgent replacement.

It is important to consider that in Pathfinder with box RE5R05A (installed before 2013) the oil degrades faster due to the design features of the torque converter. Owners of these models are advised to check the condition of the fluid every 30,000–40,000 km, even if there are no visible problems.

⚠️ Attention: If you bought Pathfinder with mileage and do not know whether the automatic transmission oil has been changed, be sure to complete replacement with washing. Old fluid may contain metal shavings, which will accelerate wear on the clutches.

What kind of oil to fill in the Nissan Pathfinder automatic transmission: original vs analogues

Oil selection is a critical step. B Pathfinder special liquid is used NS-2 (for models before 2010) or NS-3 (2011 and newer). Original articles:

Model Pathfinder	Oil type	Article	Replacement volume
R51 (2005–2010)	Nissan Matic Fluid S (NS-2)	KE908-99931	8–9 l (full replacement)
R51 (2011–2012), R52 (2013–2021)	Nissan Matic Fluid J (NS-3)	KE908-99932	9–10 l (full replacement)
Any model (alternative)	Idemitsu ATF Type-J	30450-5ATF0	—

Many owners save money by buying analogues from Idemitsu, Ravenol or Liqui Moly. This is acceptable, but only if the liquid has a certificate of conformity JASO 1A or Nissan Approval. For example, Ravenol ATF NS-3 (4014835735847) is fully compatible with the original, but costs 20–30% less.

Critical nuance: in boxes JR710E (installed on Pathfinder R52 from 2017) oil cannot be used NS-2 - this will lead to slipping of the clutches and failure of the solenoids. Always check the label on the canister!

Tools and consumables for changing automatic transmission oil

To work you will need:

• 🔧 Keys and sockets: on “10”, “14”, “17” (for drain plug), hexagon on “5” (for some models).
• 🛢️ Drain container: at least 5 liters, preferably with graduated divisions.
• 🔄 New automatic transmission filter: art. 31726-31X00 (for RE5R05A) or 31726-1XF00 (for JR710E).
• 🧤 Gloves and rags: Oil is harsh on the skin.
• 🔧 Torque wrench: for tightening the drain plug with torque 35–40 Nm.

If you plan complete replacement, you will also need:

• 🔌 Flushing adapter (For example, Liqui Moly ATF-Service Set).
• 💧 12–14 liters of oil (to completely displace the old fluid).
• 🔧 Scanner for resetting adaptations (For example, Launch X431), since after replacement it may be necessary to reset the “learning” of the box.

For Pathfinder R52 with the system CVT (variator) the replacement process is radically different - a special fluid is used there NS-3 CVT Fluid (KE908-99945), and washing is carried out under pressure. If you have a CVT, it is better to contact a service center.

What happens if you don't change the automatic transmission filter?

The old filter becomes clogged with wear products and no longer allows enough oil to pass through. This leads to oil starvation of the solenoids and valve body, which manifests itself as “kicks” when switching. In advanced cases, the box goes into emergency mode (Check AT on the dashboard) and requires major repairs.

Step-by-step instructions: partial oil change in automatic transmission

Partial replacement is suitable if the oil is not very dirty and you monitor the intervals. The procedure takes 1–1.5 hours.

Step 1. Warm up the oil

Start the engine and let it run for 5–10 minutes so that the oil in the automatic transmission warms up to 50–60°C. This will increase its fluidity and allow the maximum volume to be drained. Switch the selector through all positions (P → R → N → D → L), holding each for 3–5 seconds.

Step 2. Drain the old oil

Lift the car on a lift or drive it into a pit. Unscrew the drain plug (it is located on the automatic transmission pan) and drain the oil into a container. B Pathfinder R51 the drain plug often sticks - if it doesn’t, use penetrating lubricant WD-40.

Step 3: Replace the filter

Remove the automatic transmission pan (unscrew the bolts around the perimeter) and replace the filter. Be careful: up to 0.5 liters of oil can remain in the pan! Clean the magnets from metal shavings and rinse the tray with kerosene.

Step 4. Filling with new oil

Reinstall the pan (don't forget to change the gasket!), tighten the drain plug and fill in new oil through the filler neck. For partial replacement you will need 4–5 liters. Use a funnel with a fine mesh to prevent dirt from getting in.

Step 5. Check the level

Start the engine and warm up the oil to operating temperature. With the engine running, switch the selector through all modes, then set it to position P. Check the level on the dipstick - it should be between the marks HOT MIN And HOT MAX.

Warm the oil to 50–60°C|Drain the old oil (at least 3.5 l)|Replace the filter and clean the pan|Add new oil (4–5 l)|Check the level on a warm automatic transmission-->

Complete automatic transmission oil change: displacement method

A complete replacement is required if the oil has not been changed for more than 100,000 km or is black. The process is more complicated and requires special equipment.

Step 1. Connecting the flushing device

Disconnect the automatic transmission radiator return hose and connect it to the device (for example, Liqui Moly ATF-Service). Fill the device with 12–14 liters of new oil.

Step 2: Flush the system

Start the engine and let the vehicle pump oil through the automatic transmission. The old fluid will be replaced by new fluid. The process takes 20–30 minutes until clean oil comes out of the return.

Step 3. Replace the filter and gaskets

After washing, remove the pan, replace the filter and clean the magnets. Install a new pan gasket (art. 31397-31X00).

Step 4. Final filling and adaptation

Add oil to the level and reset the automatic transmission adaptations via the scanner (for example, Launch X431 → Nissan → AT Adaptation Reset). Without this, the box may not work correctly for the first 100–200 km.

⚠️ Attention: After a complete replacement, avoid sudden acceleration and towing for the first 500 km. The new oil has different friction properties, and the box needs time to “get used to”.

Typical mistakes when changing oil in a Pathfinder automatic transmission

Even experienced car owners make mistakes that lead to breakdowns. Here are the most common:

• 🔧 Overfilling or underfilling oil: Both are dangerous. Overfilling leads to foaming of the liquid and loss of pressure, while underfilling leads to oil starvation. Always check the level on a warm box!
• 🛢️ Mixing different types of oil: for example, NS-2 And NS-3. This causes a chemical reaction and the liquid loses its properties.
• 🔄 Ignoring adaptation: after replacement, the box “does not understand” how to work with the new oil. Without resetting adaptations, jerks may appear.
• 🧲 Uncleaned magnets: If you do not remove metal shavings from the tray magnets, they will fall back into the box and accelerate wear.

Another common mistake is using automatic transmission flushes (For example, Hi-Gear or Wynn’s). B Pathfinder With mileage, this can lead to clogging of the valve body channels, since flushing washes away deposits, which then circulate through the system.

If after replacement there are kicks or switching delays, perhaps low-quality oil was poured in or the adaptations were not reset. In this case, you need to repeat the procedure with the correct liquid and perform a reset through the scanner.

FAQ: answers to frequently asked questions

Can I use NS-3 oil instead of NS-2 in my Pathfinder R51?

Yes, NS-3 backwards compatible with NS-2 and can be used in old boxes RE5R05A. However, if the box previously contained NS-2, after replacing with NS-3 It is recommended to carry out adaptation through a scanner, since the viscosity characteristics of liquids are different.

How much oil does a Pathfinder R52 need for a complete change?

For the box JR710E will be required 10–12 liters oils NS-3. The exact volume depends on the replacement method: when washing with a device, it takes more, when manually replacing with a spill - about 9 liters.

What should I do if the transmission jerks after changing the oil?

The reasons may be the following:

1. Adaptations have not been reset - perform the procedure through the scanner (Nissan Consult or Launch).
2. The wrong oil was poured - check the compatibility according to the article number.
3. The box already had faults (worn clutches or solenoids), which appeared after replacement.

If the problem persists, contact the service for diagnostics.

Is it possible to change the oil in a Pathfinder automatic transmission yourself, without a pit?

Theoretically yes, but it is extremely inconvenient. To drain the oil, you need to crawl under the car, and without a pit or lift it is almost impossible to do this. An alternative is to use vacuum pump to pump out oil through the dipstick, but in this case it will not be possible to replace the filter and clean the pan.

What kind of oil is poured into the Pathfinder automatic transmission from the factory?

On the conveyor belt into boxes RE5R05A (until 2013) filled Nissan Matic Fluid S (NS-2), in JR710E (since 2013) — Nissan Matic Fluid J (NS-3). If you are buying a used car, check with the previous owner to see if the oil was changed and what kind of fluid was used.