Transfer case in Nissan X-Trail T31 (2007–2013) - a node that often goes unnoticed until it starts creak, vibrate or wedge off-road. Meanwhile, An oil change in the T31 transfer case is required every 60–90 thousand km - 2 times more often than the manufacturer recommends (120 thousand km), if the car is operated in difficult conditions: towing, mud, frequent trips on dirt roads or city traffic jams with overheating of the transmission.

In this article - step by step instructions with photos, selection of oil by article number, list of tools and common mistakes, which lead to breakdown of the transfer case. We'll look at why you can't use cheap analogues Nissan Matic-S, how to check the oil level without a dipstick, and what to do if after replacement it appears hum at speed. The information is relevant for all modifications X-Trail T31 with transfer case FS5R50A (2.0/2.5 petrol) and M9R (2.0 diesel).

When to change the transfer case oil Nissan X-Trail T31: signs and regulations

Official regulations Nissan prescribes the first oil change in the transfer case at 120 thousand km, but this interval is designed for ideal conditions: smooth roads, moderate climate and gentle driving style. In reality, the oil life is reduced by 1.5–2 times due to:

  • 🔥 Overheating when towing a trailer or long climbs (the oil temperature in the transfer case can reach 120–140°C).
  • 💨 Pollution wear products (metal shavings, friction dust from the clutch Attesa E-TS).
  • 🌧️ Moistureentering through the breather when crossing water obstacles.
  • ❄️ Low temperatures, accelerating the oxidation of additives (relevant for regions with frosts below -25°C).

If you ignore the replacement, the consequences will appear not right away, but gradually: first it will appear crunching noise when turning on all-wheel drive, then - vibration at speed 60–80 km/h, and in the final stage - clutch jamming and repair of transfer case for 50–80 thousand rubles..

⚠️ Attention: If after an off-road trip the transfer case starts hum in neutral, this is a sign oil overheating - urgent replacement is required, even if the mileage is still far from the planned one.
Sign of oil wear What's happening in the distribution room Urgency of replacement
Creak when turning on 4WD Thickened oil does not lubricate synchronizers Within 1–2 thousand km
Vibration at speeds of 60–80 km/h Wear of differential bearings due to lack of lubrication Immediately
Noise in neutral with hot engine Oil has lost viscosity, metal particles in the pan Immediately
Jerks when switching to four-wheel drive Clogged filter or worn coupling Attesa E-TS Diagnostics + oil change
📊 How often do you change the oil in the X-Trail T31 transfer case?
  • I follow the regulations (120 thousand km)
  • Every 60–80 thousand km
  • Only when problems arise
  • Never changed

What kind of oil should I put in the transfer case? Nissan X-Trail T31: articles and analogues

Manufacturer recommends for transfer case X-Trail T31 oil Nissan Matic-S (KE908-99931) is synthetic ATF with viscosity Dexron III, but with a unique clutch additive package Attesa E-TS. However, the original is worth 1,200–1,500 rub./l, and for a complete replacement it is required 1.8–2.0 l.

Proven analogues (compatible with Matic-S):

  • 🔹 Ravenol ATF DCTF (art. 4014835735217) - the best choice in terms of price/quality ratio, contains molybdenum additives.
  • 🔹 Motul Multi ATF (art. 105777) is a universal ATF, but requires more frequent replacement (every 50 thousand km).
  • 🔹 Idemitsu ATF Type TLS-LV (art. 30050055-925) is a Japanese analogue, close in composition to the original.
  • 🔹 Liqui Moly Top Tec ATF 1200 (art. 7502) - suitable for cold climates (up to -40°C).
⚠️ Attention: Do not use cheap mineral based ATFs (eg. Castrol Transmax Dex III) - they cannot withstand the loads in the coupling Attesa E-TS and lead to all-wheel drive slippage.

For diesel versions X-Trail T31 (engine M9R) oil allowed Nissan Matic-J (KE909-99932), but only if the transfer case is not equipped with a system Attesa E-TS (rare modifications for the Middle East). In other cases - only Matic-S or its analogues.

Can different ATFs be mixed?

Mixing Nissan Matic-S with other ATF is allowed only in emergency cases (for example, in case of leakage on the way), but not more than 30% of the total volume. After this, a complete oil change with flushing is required. Long-term use of the mixture leads to oil foaming And friction wear all-wheel drive clutches.

Tools and consumables: complete list for replacement

To work you will need:

  • 🔧 Keys and heads: 10 mm (drain plug), 24 mm (filler plug), 8 mm (protection fastening).
  • 🛢️ Drain container (minimum 3 l) with a wide neck.
  • 🔩 Torque wrench (tightening torque for plugs - 35–40 Nm).
  • 🧤 Nitrile gloves (oil ATF toxic if in contact with skin).
  • 🧻 Lint-free rags And solvent (For example, WD-40) to clean plugs.
  • 🔍 Endoscope or flashlight to inspect the pallet for metal shavings.
  • 🛠️ Oil syringe (with a flexible hose with a diameter of 8–10 mm).

Consumables:

  • 🛢️ Oil Nissan Matic-S or analogue - 2 l (for a complete replacement with flushing).
  • 🔧 New copper o-rings for traffic jams (art. 11026-01M02, 2 pcs.).
  • 🧴 Sealant Loctite 574 (optional if the plugs are very worn).
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Before buying oil, check its authenticity: on the original canister Nissan Matic-S there should be a hologram with a logo Nissan and serial number, which can be checked on the manufacturer’s website.

Step-by-step instructions: how to drain old oil

Work is carried out on flat surface (overpass, lift or pit). If you jack up the car, be sure to record rear axle with stops - transfer case weighs ~25 kg, and if dropped, it may damage the driveshaft.

  1. Warm up the oil up to operating temperature (50–60°C): Drive 5–10 km or run the engine for 10 minutes. Hot oil drains faster and carries away more deposits.

  2. Remove the engine protection (if present): unscrew the 4 bolts with a wrench 10 mm and 2 screws Torx T30.

  3. Clean the plugs from dirt rags and WD-40. The drain plug is located in the lower part of the transfer case (from the side of the rear cardan), the filler plug is on the side wall closer to the front cardan.

  4. Place the container and unscrew the drain plug with a key 10 mm. Be careful - there will be oil hot!

  5. Wait until it drains completely (10–15 minutes). If the oil flows in a thin stream or drips, there are deposits in the transfer case.

After draining, inspect the drain plug magnet: if there is a lot of metal shavings (more than 1–2 mm layer), required disassembling the transfer case for bearing diagnostics. Normal - fine dust or small particles (0.1–0.3 mm).

Inspect the plug magnet for chips|Check the integrity of the plug threads|Clean the plug seats from old sealant|Make sure that at least 1.5 liters of oil have drained out-->

Flushing the transfer case: is it necessary and how to do it correctly

Flushing is required in three cases:

  1. If oil black or with metal particles.
  2. If the service history is unknown (for example, buying a used car).
  3. If oil was poured non-compliant standard (For example, Dexron II instead of Dexron III).

For washing:

  1. Screw on the drain plug with a new O-ring.

  2. Fill in 1 l flushing oil (For example, Liqui Moly Getriebe-Reiniger art. 2031) through the filler hole.

  3. Raise the front axle with a jack (so that the wheels are hanging) and start the engine. Turn on all-wheel drive (4WD Lock) and let it idle for 3-5 minutes.

  4. Drain the flushing oil and inspect it: if it dirty, repeat the procedure.

⚠️ Attention: Do not use for rinsing kerosene or diesel fuel - they destroy oil seals and seals. It is also forbidden to wash the transfer case under pressure (for example, from a compressor) - this washes the lubricant out of the bearings.
💡

Flushing lengthens the replacement process by 30–40 minutes, but increases the service life of the transfer case by 20–30%. This is especially relevant for cars with mileage >150 thousand km.

Filling with new oil: nuances and typical mistakes

Pour oil into the transfer case X-Trail T31 more convenient through syringe with flexible hose, but you can also use a funnel with an extension. The main thing is don't overfill: optimal level - along the bottom edge of the filler hole.

  1. Install a new sealing washer onto the filler plug.

  2. Start adding oil slowlyto avoid the formation of air pockets.

  3. After pouring 1.5 l check the level: it should be at 5–10 mm below the edge. If oil begins to leak out, the plug is not screwed in tightly or is skewed.

  4. Torque the plug 35–40 Nm and wipe the transfer case with a rag.

After replacement:

  • 🔧 Ride 5–10 km with four-wheel drive for 1–2 minutes.
  • 🔍 Check for leaks around traffic jams.
  • 📋 Write down the mileage and date of replacement (for example, in the service book or on a sticker under the hood).

Common mistakes when filling:

  • ❌ Oil overflow - leads to foaming and loss of ATF properties.
  • ❌ Using sealant on plugs - may get into the oil and clog the filter.
  • ❌ Tightening plugs without a torque wrench - is fraught with thread failure.

What to do if problems arise after changing the oil

Sometimes after changing the oil in the transfer case X-Trail T31 malfunctions occur. Their reasons and solutions:

Problem Possible reason Solution
Noise at speeds of 60–80 km/h Insufficient oil level or air lock Add oil, drive with 4WD on for 5–10 km
Vibration during acceleration Poor quality oil or mixing of different ATFs Complete oil change with flushing
Four-wheel drive does not engage Clogged clutch filter Attesa E-TS or faulty solenoid Diagnostics of the transfer case, replacement of the filter (art. 31397-3MX0A)
Leaking from plugs Damaged O-ring or skewed plug Replace rings, tighten plugs with torque 35–40 Nm

If problems persist after changing the oil again, it is necessary to computer diagnostics handouts (for example, error checking using CONSULT-III) or disassembly to inspect bearings and couplings Attesa E-TS.

FAQ: answers to frequently asked questions

Is it possible to pour it into a dispenser? X-Trail T31 automatic transmission oil?

Yes, but only if it meets the standard Dexron III and has permission for wet couplings (For example, Mobil ATF 3309). However, the original Nissan Matic-S preferable as it contains additives to protect the coupling Attesa E-TS.

How much oil is needed for a complete oil change with flushing?

For a complete replacement you will need 2 liters of oil: 1 liter for rinsing and 1–1.1 liter for filling. If rinsing is not needed, it is enough 1.5–1.6 l.

How to check the oil level in the transfer case without a dipstick?

The level is checked through the filler hole: the oil should be at the level of the bottom edge. If it’s not visible, add 100 ml at a time until it starts to leak.

What happens if you don’t change the oil in the transfer case?

After 150–200 thousand km Without replacement, the oil loses its properties, which leads to:

  • 🔥 Overheating and deformation of synchronizers.
  • 🔧 Wear and tear differential bearings (noise at speed).
  • ❌ Jamming couplings Attesa E-TS (all-wheel drive will not engage).

Repair of the transfer case will cost 40–80 thousand rubles., so change the oil every 60–90 thousand km economically justified.

Is it possible to mix oil Nissan Matic-S with analogues?

Mixing is allowed only in extreme cases (for example, if there is a leak on the way), but no more 30% of volume. After this it is required complete replacement with washing. Long-term use of the mixture leads to foaming And loss of lubricating properties.