Automatic transmission oil for Nissan Pathfinder R51: how to choose and replace correctly

Automatic transmission Nissan Pathfinder R51 (2005–2012) is a complex unit that requires special attention to the quality of the transmission fluid. Incorrect choice of oil or untimely replacement can lead to slipping, jerking when switching and even valve body failure. In this article we will look at which oil is suitable for Automatic transmission RE5R05A (installed on Pathfinder R51 with engines VQ40DE, VQ25DE, YD25DDTi), how to replace it correctly and what to look for when purchasing.

The manufacturer recommends using original Nissan Matic-S fluid (article KLE52-00004), but there are worthy analogues on the market from Idemitsu, Ravenol And Motul. However, not all of them are compatible with RE5R05A - some lead to contamination of solenoids after 20–30 thousand km. We tested 5 popular oils and identified the best options in terms of price/quality ratio.

Types of oils for automatic transmission Nissan Pathfinder R51: what to fill?

Box RE5R05A sensitive to viscosity and oil additive package. The manufacturer specifies two main standards:

• 🔹 Nissan Matic-S — original fluid developed for automatic transmissions Nissan And Infiniti early 2000s. Suitable for all modifications Pathfinder R51, including diesel.
• 🔹 JWS 3309 - standard Toyota, but compatible with RE5R05A due to similar requirements for antifriction properties.
• 🔹 Dexron III - outdated standard, not recommended for Pathfinder R51 due to insufficient thermal stability.

Important: oils with markings Dexron VI or Mercon LV don't fit - they have a different viscosity and can cause friction clutches to slip. If you see the inscription “Universal ATF” on the canister, it is better to refuse the purchase - such liquids rarely meet the requirements Jatco (automatic transmission manufacturer for Nissan).

Among analogues of the original Matic-S have proven themselves well:

• 🛢️ Idemitsu Type M (article 30050033-025) - a complete analogue in composition, often used in services.
• 🛢️ Ravenol ATF J1D1706 - German oil with improved antioxidant properties.
• 🛢️ Motul Multi ATF - a universal fluid, but requires more frequent replacement (every 50 thousand km).

Signs of oil wear in an automatic transmission: when to change?

The manufacturer claims that the oil in RE5R05A filled for the entire service life, but in practice its resource is limited 80–100 thousand km (or 5–6 years). When driving aggressively or driving in city traffic jams, the interval is reduced to 60 thousand km. The need for replacement is indicated by:

• ⚠️ Jerks when switching - especially noticeable when cold or during acceleration.
• ⚠️ Reaction delays on pressing the gas pedal (more than 1–1.5 seconds).
• ⚠️ Extraneous sounds (hum, grinding) when the box is operating.
• ⚠️ Darkening of the oil — the fluid on the dipstick should be red, not brown or black.
• ⚠️ Burning smell - indicates overheating of the clutches.

If you ignore these symptoms, the consequences can be serious:

⚠️ Attention: Contaminated oil leads to clogging of the valve body and solenoids. 70% of the time it ends overhaul of automatic transmission (cost from 80 thousand rubles). Boxes on diesel engines are especially vulnerable Pathfinder R51 — due to high torque, wear occurs faster.

You can check the condition of the oil yourself:

1. Start the engine and warm up the transmission to operating temperature (drive 5–10 km).
2. Place the car on a flat surface and move the selector to position P.
3. Take out the automatic transmission dipstick (located to the right of the engine, under the hood) and drop some oil onto white paper.
4. If the fluid is dark, contains metal particles, or smells like burning, an urgent replacement is required.

Step-by-step oil change in automatic transmission Nissan Pathfinder R51

Changing the oil in RE5R05A can be done in two ways: partial (30–40% volume) and full (with removal of the pan and washing). For Pathfinder R51 the second option is optimal, since it allows you to remove up to 90% of the old liquid and clean the magnets from metal shavings.

To work you will need:

• 🔧 New oil (8–9 liters for a complete change).
• 🔧 Automatic transmission filter (article 31728-31X00 or 31728-31X01).
• 🔧 Pallet gasket (article no. 31397-31X00).
• 🔧 Set of sockets and 10 mm wrench.
• 🔧 Funnel with a thin spout and a hose for pouring.
• 🔧 Container for draining (at least 5 liters).

Step by step instructions:

1. Warm up the box (drive 10–15 km) and turn off the engine.
2. Remove the crankcase protection (if equipped) and unscrew the automatic transmission pan drain plug (10 mm wrench).
3. Drain the oil into a container. B RE5R05A About 3.5–4 liters are drained.
4. Unscrew the 18 bolts of the pan (start from the corners so as not to deform it).
5. Remove the tray, clean the magnets from shavings and wash it with kerosene.
6. Replace the filter (it is secured with 3 bolts inside the box).
7. Install a new pan gasket and reassemble everything in reverse order.
8. Fill in new oil through the dipstick hole (you will need a funnel with a hose).
9. Start the engine, warm up the box and check the oil level (should be between the marks HOT on the dipstick).

Buy an original filter and gasket|Warm the box to operating temperature|Prepare a container for draining (at least 5 l)|Have a torque wrench on hand (tightening torque of the pan bolts is 8–10 Nm)|Check the oil level on a warm automatic transmission-->

If you decide to do partial replacement, the algorithm is simpler:

1. Drain 3–3.5 liters of oil through the plug.
2. Fill the new volume through the dipstick.
3. Repeat the procedure after 500–1000 km to update 70–80% of the fluid.

⚠️ Attention: During a partial replacement, the old oil is mixed with the new one, which reduces the effectiveness of the procedure. If the box is already running jerkily, this method may not help - a complete replacement with washing is required.

Mistakes when changing the oil: what not to do?

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

Error	Consequences	How to avoid
Using a non-original filter	Valve block clogged, oil pressure drop	Buy only 31728-31X00 or 31728-31X01
Overfilling or underfilling oil	Foaming of the liquid, overheating of the box	Check the level on a warm automatic transmission using the dipstick
Mixing different types of ATF	Destruction of additives, corrosion of parts	Use only Matic-S or compatible analogues
Replacement without flushing the pan	Remaining chips and dirt end up in the new oil.	Clean magnets and tray with kerosene

Another critical error - use of flushing fluids. Many auto chemicals (for example, Liqui Moly ATF Reiniger) have an aggressive effect on seals and gaskets RE5R05A, which leads to leaks. If the box is very dirty, it is better to double replacement at intervals of 500 km, rather than risk flushing.

Also not recommended:

• 🚫 Replace the oil with cold one - the viscous liquid does not drain completely.
• 🚫 Use sealant instead of gasket - it can clog the oil pan.
• 🚫 Driving with a faulty automatic transmission cooling radiator - overheating kills the oil within 10-15 thousand km.

Comparison of original oil and analogues: which is better?

Original oil Nissan Matic-S is expensive (about 1200–1500 rubles/liter), but guarantees compatibility with RE5R05A. However, there are analogues on the market that are not inferior in quality, but are 20–30% cheaper. We analyzed 5 popular options:

Oil	Compatible with RE5R05A	Price (liter)	Pros	Cons
Nissan Matic-S	100%	1200–1500 rub.	Optimal additive package, long service life	High price, fakes on the market
Idemitsu Type M	98%	900–1100 rub.	Complete analogue, good thermal stability	Less common in stores
Ravenol ATF J1D1706	95%	800–1000 rub.	Improved anti-friction properties	May cause slight foaming when overfilled
Motul Multi ATF	90%	700–900 rub.	Versatility, low price	Loses properties faster (replace every 50 thousand km)
ZIC ATF Multi	85%	500–700 rub.	Budget option	Not suitable for diesel Pathfinder R51

For cars with mileage of more than 100 thousand km, we recommend Idemitsu Type M — it has a gentler effect on old oil seals and washes away deposits less. If your budget is limited, you can use Ravenol, but monitor the oil level every 10 thousand km.

Beware of fakes! Original Matic-S Sold in cans with a holographic sticker and production date on the bottom. U Idemitsu check for Japanese characters on the label.

How to distinguish original oil from a fake?

Original Nissan Matic-S has:

1. A canister with a raised “Nissan” inscription (not smooth).

2. Holographic sticker with a changing pattern when tilted.

3. Production date on the bottom (MM/YYYY format).

4. A cork with a protective ring that breaks when first opened.

Counterfeits are often sold in canisters without embossing, with a blurred label or without a hologram.

Frequent automatic transmission problems after changing the oil

In some cases, after changing the oil in RE5R05A malfunctions occur. Let's look at typical situations and their solutions:

• 🔧 The box started to twitch — the cause may be washing out deposits with new oil. Solution: drive 200–300 km; if the problem persists, check the solenoids.
• 🔧 There was a hum — perhaps the oil is not filled enough or a non-original filter is installed. Solution: add fluid to the level HOT or replace the filter.
• 🔧 Gears won't turn on - often associated with air in the valve body. Solution: switch the selector several times to all modes (P-R-N-D) with the engine running.
• 🔧 Oil leak - if sealant or old gasket was used. Solution: replace the pan gasket with a new one (31397-31X00).

If the light comes on after changing the oil Check Engine and the box went into emergency mode, the reasons may be more serious:

• Clogged solenoids (needs cleaning or replacement).
• Torque converter malfunction (needs diagnostics).
• Damage to the wiring of automatic transmission sensors.

⚠️ Attention: On Pathfinder R51 with a mileage of more than 200 thousand km, changing the oil can cause failure of the valve body. This is due to the fact that old oil “preserves” deposits, and new oil washes them away, clogging the channels. In such cases, we recommend partial replacement at intervals of 1–2 thousand km.

Recommendations for automatic transmission maintenance to extend service life

To the box RE5R05A lasted longer, follow these tips:

• 🔹 Check the oil level every 10 thousand km (even if there are no leaks).
• 🔹 Avoid overheating - Do not tow heavy trailers or participate in racing.
• 🔹 Change the oil every 60 thousand km (or once every 3 years) if you drive mostly in the city.
• 🔹 Use the original automatic transmission cooler - on Pathfinder R51 it often gets clogged.
• 🔹 Don't put it in neutral at traffic lights - this increases the load on the torque converter.

Pay special attention cooling the box. On Pathfinder R51 The automatic transmission radiator is integrated into the main engine radiator. When it becomes clogged, the oil overheats, which leads to:

• 🔥 Loss of viscosity and formation of varnish deposits.
• 🔥 Wear of friction discs and bearings.
• 🔥 Reducing the life of solenoids.

You can check the condition of the radiator by checking the oil temperature (the norm is 70–90°C). If it exceeds 100°C, flushing or replacement is required.

FAQ: Frequently asked questions about automatic transmission oil for Pathfinder R51

Can Dexron VI be used instead of Matic-S?

No, Dexron VI has a different viscosity and an additive package that is incompatible with clutches RE5R05A. This will lead to slippage and accelerated wear of the box. The only valid analogue is JWS 3309 (For example, Toyota Type T-IV).

How much oil is needed for a complete change?

B RE5R05A refilled 8.5–9 liters oils For a complete replacement with removal of the pan and washing, you will need 9–10 liters (part remains in the torque converter). For a partial replacement, 4–5 liters will be enough.

How often should you change the oil if the car is operated in a hot climate?

In regions with temperatures above 30°C, automatic transmission oil degrades faster. Recommended replacement interval - every 40–50 thousand km. Also check the condition of the automatic transmission cooling radiator - it may become clogged with dust.

What to do if after changing the oil the gearbox starts to work worse?

This is normal if:

• The oil was changed after 100+ thousand kilometers (deposits are washed out).
• We used flushing (it can soften old seals).

Solution: drive 200–300 km. If the problem persists, check the pressure in the valve body (the solenoids may need to be replaced).

What kind of oil should I fill in a Pathfinder R51 automatic transmission with a mileage of 200+ thousand km?

For old boxes we recommend:

• Idemitsu Type M — gently cleanses without damaging oil seals.
• Nissan Matic-S - if the budget allows.

Avoid Motul Multi ATF and other "universal" oils - they can accelerate wear. We also recommend doing partial replacement in 2-3 stages, so as not to cause clogging of the valve body.