What kind of oil to fill in the <em>Nissan Almera Classic</em> manual transmission: recommendations, analogues and replacement nuances

Nissan Almera Classic (also known as Nissan Sunny or Samsung SM3 in some countries) is a reliable sedan with a manual transmission, which is still popular due to its simplicity of design and availability of spare parts. However, even the most unpretentious Manual transmission requires proper maintenance, and the key point here is the choice of gear oil.

Owners are often faced with questions: what kind of oil was filled from the factory, is it possible to use analogues, how often to change it, and what will happen if you ignore the regulations? In this article we will analyze all the nuances of selecting oil for manual transmission Almera Classic (B10), including original specifications, proven replacements and step-by-step replacement instructions. You will also find out why Using oil with an unsuitable viscosity can lead to difficult gear shifting in cold weather or accelerated wear of synchronizers.

Original oil for manual transmission Nissan Almera Classic: what is filled from the factory

According to technical documentation Nissan, to a manual transmission Almera Classic (models 2006–2012, body B10) transmission oil is filled from the factory KE908-99931 (article number of the original packaging). This oil meets the standard API GL-4 and has a viscosity 75W-85.

It is important to understand that Nissan does not produce oil independently - under the brand Nissan Oil products produced by partners are sold (for example, Idemitsu or Eneos). Therefore, the original oil KE908-99931 composition is identical to some universal analogues, but with guaranteed compliance with specifications Nissan.

• 🔧 Article number of the original oil: KE908-99931 (1 l) or KE908-99932 (4 l).
• 📋 Specification: API GL-4, viscosity 75W-85.
• ⚠️ Feature: Not to be confused with automatic transmission oil (for example, Matic S or Matic D)!

In practice, many owners note that the original oil Nissan difficult to find in retail, especially in small towns. In addition, its price is often inflated compared to analogues of the same quality. Therefore, next we will consider what alternatives can be used without risk to the box.

Analogues of the original oil: what to choose instead KE908-99931

If the original oil is not available or its price seems unjustified, you can choose a high-quality analogue. Main rule: oil must meet standard API GL-4 and have viscosity 75W-85. Use of oils GL-5 not recommended, as they contain aggressive additives that can damage manual transmission synchronizers.

The table below shows proven analogues that are successfully used by owners Almera Classic:

Brand	Oil name	Viscosity	Specification	Approximate price (1 l)
Castrol	Syntrans Transaxle 75W-90	75W-90	API GL-4+	800–950 ₽
Mobil	Mobilube 1 SHC 75W-90	75W-90	API GL-4/GL-5	900–1100 ₽
Liqui Moly	Getriebeoil 75W-80	75W-80	API GL-4	1000–1200 ₽
Motul	Gear 300 75W-90	75W-90	API GL-4/GL-5	1100–1300 ₽
ZIC	G-FF 75W-85	75W-85	API GL-4	600–750 ₽

Please note that some oils (eg. Mobilube 1 SHC or Motul Gear 300) have double specification GL-4/GL-5. This means that they are suitable for both manual transmissions and hypoid axles. However for Almera Classic It is better to choose products with clean specification GL-4to avoid the risk of damaging the synchronizers.

⚠️ Attention: Oils with viscosity 80W-90 or 85W-90 not recommended for regions with cold winters (below –20°C). They can make it difficult to change gears when cold.

Oil volume in manual transmission Almera Classic and replacement frequency

To a manual transmission Nissan Almera Classic (models with engines 1.5 And 1.6 liter) is poured about 2.8–3.0 liters of oil. The exact volume depends on how completely the old oil is drained. For a partial replacement (without flushing), 2.5–2.7 liters are usually required.

As for the replacement regulations, official recommendations Nissan read: The oil in the manual transmission is filled for the entire service life of the car.. However, in practice, this statement is true only for ideal operating conditions (moderate climate, no load, rare traffic jams). In reality, the oil loses its properties due to:

• 🔥 Overheating (for example, when towing or aggressive driving).
• 💧 Moisture ingress (condensation during frequent short trips).
• 🛑 Contamination with wear products (metal shavings, synchronizer particles).

Therefore, experienced technicians recommend changing the oil in the manual transmission. Almera Classic every 60–80 thousand km or once every 4–5 years (whichever comes first). If the car is used in difficult conditions (taxi, frequent off-road trips, extreme temperatures), the replacement interval should be reduced to 40–50 thousand km.

Step-by-step instructions for changing the oil in a manual transmission

Changing the oil in a manual transmission Almera Classic - a procedure that can be performed independently with a minimum set of tools. You will need:

• 🔧 Key on 24 mm (for drain plug).
• 🔧 Key on 17 mm (for filler plug).
• 🛢️ Funnel with flexible hose (diameter about 10 mm).
• 🧤 Gloves and rags.
• 🚗 Pit, overpass or lift.

The replacement process consists of the following steps:

1. Warm up the box: Drive 5-10 km to allow the oil to become less viscous and drain better.
2. Drain the old oil:
   • Place a container with a volume of at least 3 liters under the drain hole.
   • Unscrew the drain plug with a wrench 24 mm (it is located in the lower part of the manual transmission housing).
   • Wait for the oil to drain completely (may take 10-15 minutes).
3. Wash the box (optional):
   • If the oil is very dirty (dark, with metal shavings), you can add 0.5 liters of fresh oil, tighten the drain plug and let the engine run for 2-3 minutes in neutral gear. Then drain again.
4. Screw in the drain plug and install a new sealing washer (copper or aluminum).
5. Fill with new oil:
   • Unscrew the filler plug (key on 17 mm, located on the side of the box).
   • Using a funnel and hose, add oil until it begins to flow out of the filler hole.
   • Tighten the plug.

If, after replacement, oil continues to flow out of the filler hole while the engine is running, this may indicate overflow. In this case, you need to drain the excess a little, since an excess amount of oil can lead to increased pressure and leaks through the seals.

Common mistakes when changing oil and their consequences

Even such a simple procedure as changing the oil in a manual transmission can turn into problems if you make mistakes. Let's look at the most common of them and their possible consequences:

• 🔴 Use of oil GL-5 instead of GL-4:

  Oils GL-5 contain sulfur-phosphorus additives, which have an aggressive effect on synchronizers (especially brass ones). This may lead to accelerated wear and difficult gear shifting.

• 🔴 Insufficient or excessive oil level:

  Underfilling leads to oil starvation and accelerated wear of bearings, and overfilling leads to oil foaming and leaks through the seals.

• 🔴 Ignoring replacement of sealing washers:

  Old washers on plugs may not provide a tight seal, which will lead to oil leaks and dirt getting into the box.

• 🔴 Changing the oil to cold:

  The cold oil is not completely drained, and up to 200–300 ml of old oil with wear products remains in the box.

⚠️ Attention: If after changing the oil there is crunch when shifting gears, this may indicate incompatibility of the new oil with the synchronizer materials. In this case, repeated replacement with washing of the box is required.

Another common mistake is using cheap oils from unknown brands. These products often do not meet their stated specifications and may contain poor quality additives that will form deposits on gears and bearings over time.

What should I do if the transmission is noisy after changing the oil?

If noise (howling or humming) appeared immediately after replacement, possible reasons:

1. Insufficient oil level (add).

2. Using oil with the wrong viscosity (for example, 80W-90 instead of 75W-85).

3. Air entering the system (you need to let the box run for 10–15 minutes).

4. Bearing wear (diagnostics required).

If the noise continues, contact a professional to check the condition of the box.

How to check the oil level and condition in a manual transmission

Unlike automatic transmission, in manual transmission Almera Classic There is no dipstick to check the oil level. Therefore, control is carried out through filler hole, which simultaneously serves as a level indicator. Here's how to do it:

1. Place the car on a flat surface (pit or lift).
2. Unscrew the filler plug with a wrench 17 mm.
3. Check the level:
   • If oil begins to flow out of the hole, the level is normal.
   • If the oil does not flow out, topping up is required.
4. Assess the condition of the oil:
   • 🟢 Norm: light brown or amber color, no burning odor.
   • 🟡 Needs replacement: dark color, turbidity, presence of small particles.
   • 🔴 Critical condition: black oil, metal shavings, burnt smell.

If the oil has metallic shine or particles are visible in it, this indicates active wear of gears or bearings. In this case, it is recommended not only to change the oil, but also to diagnose the gearbox.

Answers to frequently asked questions about manual transmission oil Almera Classic

❓ Is it possible to mix different oils in a manual transmission?

Mix oils of different brands or types (GL-4 And GL-5) not recommended, as this may lead to sedimentation or changes in viscosity properties. If it becomes necessary to add oil, use the same product as during the last change. As a last resort, mixing oils of the same brand and specification is allowed (for example, Castrol Syntrans 75W-90 with Castrol Transmax 75W-90).

❓ What happens if you don’t change the oil in the manual transmission?

Over time, the oil loses its lubricating and protective properties, which leads to:

• Increased noise and vibration during box operation.
• Difficulty shifting gears (especially when cold).
• Accelerated wear of synchronizers and bearings.
• In critical cases - to box jamming.

In practice, the service life of a manual transmission can be reduced by 30–50% if the oil change is ignored.

❓ Is the oil suitable? 75W-90 instead of 75W-85?

Yes, oil with viscosity 75W-90 can be used instead 75W-85, as it has a wider temperature range and is better suited for hot climates. However, in regions with cold winters (below –25°C) 75W-85 preferable, since it is less viscous in the cold. The main thing is that the oil meets the specification GL-4.

❓ Do I need to rinse the box when changing the oil?

Manual transmission flushing is required only in the following cases:

• If the old oil is heavily contaminated (black, with metal shavings).
• If you are switching to a different type of oil (for example, from mineral to synthetic).
• If the box was bought used and it is unknown what is in it.

For flushing, use special flushing oils (for example, Liqui Moly Getriebe-Reiniger) or the same transmission oil that you will fill. Flushing with regular kerosene or diesel fuel prohibited!

❓ Which oil is better: original or analogue?

Original oil Nissan KE908-99931 guaranteed to meet the manufacturer's requirements, but often more expensive than analogues. High-quality analogues (for example, Castrol Syntrans or Liqui Moly Getriebeoil) are no worse, and sometimes even superior to the original in terms of performance properties. The main thing is to choose oil with the correct specification (GL-4, 75W-85 or 75W-90) and buy it from trusted sellers to avoid counterfeits.