Antifreeze for Nissan Almera Classic: which one to choose, when to change and how not to damage the engine

Nissan Almera Classic (also known as Nissan Sunny or Samsung SM3 in some countries) is a car that remains popular today due to its reliability and ease of maintenance. However, even such a time-tested car has weak points, one of which is the cooling system. Correct choice and timely replacement antifreeze can prevent engine overheating, radiator corrosion and costly repairs.

In this article we will look at what kind of antifreeze is poured from the factory into Almera Classic, which analogs are suitable for replacement, how often it should be done, and what mistakes owners most often make. Information relevant for gasoline engines QG15DE (1.5 l) and QG18DE (1.8 l), as well as for diesel versions (if they are found in your region).

Original antifreeze for Nissan Almera Classic: what is filled from the factory

From factory to Nissan Almera Classic (model range N16, produced from 2006 to 2012) coolant is poured Nissan Coolant L248 Premix (article KE902-99932). This green antifreeze ethylene glycol based, meets specification Nissan Long Life Coolant (type Type D). It is designed for 5 years of operation or 100,000 km - whichever comes first.

Features of the original antifreeze:

• 🔹 Color: green (not to be confused with blue or red!).
• 🔹 Type: hybrid (contains silicates and organic inhibitors).
• 🔹 Temperature range: from –40°C to +130°C.
• 🔹 Compatibility: does not mix with propylene glycol based antifreezes (e.g. G12++ or G13).

Important: if you buy Almera Classic on the aftermarket, never trust the color of the fluid in the expansion tank. The previous owner could have filled in anything - from cheap Antifreeze to counterfeiting the original. Check the composition only by the label or through diagnostics.

⚠️ Attention: If the cooling system is already filled with a different type of antifreeze (for example, red G12+), a complete replacement with washing is required! Mixing different types leads to the formation of a gel and blockage of the radiator channels.

Analogues of the original antifreeze: what can be filled instead of Nissan L248

Original antifreeze Nissan Coolant L248 is expensive (from 1,500 rubles for 5 liters), so many owners are looking for analogues. The main rule: the selected liquid must meet the specification Nissan Type D or JIS K 2234 (Japanese standard). Suitable options:

Brand	Title	Article	Color	Service life
CoolStream	NRC	CS0105	Green	5 years / 250,000 km
Ravenol	JTC Japan Coolant	4014835755517	Green	5 years / 200,000 km
Motul	Inugel Optimal	105776	Green	5 years / 150,000 km
Liqui Moly	Kuhlerschutz KFS 2001 Plus	8841	Green	3 years / 150,000 km

Budget options you can consider Sintec Unlimited (G12++) or Felix Carbox G12+, but they will have to be changed more often - once every 3 years. Before pouring any analogue be sure to flush the system distilled water or a special cleaner (for example, Liqui Moly Kuhlerreiniger).

When to change antifreeze: signs of wear and replacement schedule

Official regulations Nissan requires replacement of antifreeze every 5 years or 100,000 km. However, in Russian realities (with sharp temperature changes, poor quality roads and possible adulteration of fluids), it is better to reduce this period to 3–4 years or 60,000–80,000 km.

Signs that it’s time to change the antifreeze:

• 🔸 Color Change: if the green color becomes rusty or cloudy, corrosion products have accumulated in the liquid.
• 🔸 Sediment in the tank: flakes or gel-like clots indicate the disintegration of additives.
• 🔸 Foam on surface: indicates the entry of air or incompatibility of liquids.
• 🔸 Engine overheating: If the temperature rises above 90°C for no apparent reason, check the antifreeze.

To check the condition of antifreeze you can use test strips (For example, Motul Coolant Test Strips). They show the level of corrosion protection and freezing point. If the pH is below 7.0 or above 10.5, the liquid has lost its properties.

⚠️ Attention: If oil particles (greasy spots on the surface) appear in the antifreeze, this is a sign of damage to the cylinder head gasket. In this case, replacing antifreeze will not help - engine diagnostics are needed.

Step-by-step instructions: how to replace antifreeze in a Nissan Almera Classic

Replacing antifreeze in Almera Classic does not require special skills, but will require accuracy. You will need:

• 🛠️ New antifreeze (6-7 liters for a complete replacement).
• 🛠️ Distilled water (10-15 liters for rinsing).
• 🛠️ Set of keys (10, 14 and 17 mm).
• 🛠️ Container for draining (at least 10 liters).
• 🛠️ Funnel and hose for pouring.

Procedure:

1. Drain old antifreeze:
   • Place the machine on a level surface and allow the engine to cool.
   • Remove the expansion tank cap.
   • Place a container under the drain hole on the radiator (bottom right) and unscrew the plug with a 14 mm wrench.
   • Unscrew the plug on the cylinder block (17 mm wrench) to completely drain.
2. Flush the system:
   • Close the drain plugs and fill with distilled water through the expansion tank.
   • Start the engine and let it idle for 10–15 minutes.
   • Drain the water and repeat the procedure 2-3 times until the water runs clear.
3. Add new antifreeze:
   • Tighten the drain plugs and fill antifreeze through the expansion tank to the mark MAX.
   • Start the engine, turn the heater on to maximum and add fluid as the air leaves.
   • Check the level after 1-2 days and top up if necessary.

Check the compatibility of the new antifreeze with the original |

Buy enough liquid (6–7 liters)|

Prepare tools and container for draining|

Cool the engine before operating|

Flush the system if a different type of antifreeze is filled-->

If after replacement there is air left in the system (the heater blows cold), warm up the engine with the reservoir cap open and squeeze the radiator pipes several times to squeeze out the air pockets.

Common mistakes when replacing antifreeze and how to avoid them

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

1. Mixing different types of antifreeze.

   For example, green Nissan L248 and red G12+. This causes a chemical reaction that creates a gel that clogs the radiator and pump. Solution: If you don’t know what was filled in earlier, flush the system completely.

2. Use tap water for dilution.

   Chlorine and salts in water accelerate corrosion of aluminum parts (radiator, cylinder head). Solution: only distilled water!

3. Underfilling or overfilling of antifreeze.

   A low level leads to overheating, a high level leads to excess pressure and leaks. Solution: fill to the mark MAX on a cold engine.

4. Ignoring air pockets.

   If after replacement the stove does not heat, it means there is air left in the system. Solution: Warm up the engine with the reservoir cap open and bleed the pipes.

What happens if you don't change antifreeze for a long time?

Old antifreeze loses its anti-corrosion properties, which leads to:

- Destruction of aluminum parts (radiator, pump, thermostat).

- Blockage of cooling channels with additive decomposition products.

- Engine overheating and risk of cylinder head deformation.

- Reduced pump life (bearings wear out faster due to poor lubrication).

In critical cases, it may be necessary to replace the radiator (from 10,000 rubles) or repair the cylinder head (from 30,000 rubles).

Which antifreeze is NOT suitable for Nissan Almera Classic

Not all coolants are compatible with Almera Classic. That's what absolutely cannot be filled:

• 🚫 Antifreeze (all types): contains aggressive silicates that destroy aluminum.
• 🚫 Antifreezes based on propylene glycol (G13): not compatible with original specification Nissan.
• 🚫 Cheap antifreeze without certification: for example, "Lukoil Ultra" or "Sintek Euro" (do not correspond JIS K 2234).
• 🚫 Liquids with methanol: evaporate quickly and do not provide protection at high temperatures.

Also avoid antifreeze labeled G11 (blue or green, but not according to Japanese standards). They contain silicates, which precipitate over time and clog the thin passages of the cooling system.

Frequently asked questions about antifreeze for Nissan Almera Classic

Is it possible to mix original Nissan L248 antifreeze with analogues?

It is possible, but only if the analogue has the same specification (Type D or JIS K 2234) and green color. For example, CoolStream NRC or Ravenol JTC. Mixing with other types (eg G12+) will lead to the formation of sediment.

How much antifreeze is needed for a complete replacement in Almera Classic?

Cooling system volume - 6.7 liters. However, when replacing without flushing, about 5–5.5 liters leak out (the remainder remains in the cylinder block). A complete replacement with flushing will require 7–8 liters of new fluid.

What should I do if the engine overheats after replacing the antifreeze?

The reasons may be the following:

1. There is still air in the system - bleed it by squeezing the pipes while the engine is running.
2. The thermostat is faulty - check whether it opens when heating (the temperature of the pipes should change).
3. The radiator is clogged - wash it outside (with a stream of water) and inside (with a special cleaner).
4. Low-quality antifreeze - drain and refill with a proven brand.

If the problem persists, diagnose the pump and temperature sensor.

How to check antifreeze for authenticity?

Fake antifreeze often has:

• Strong chemical smell (the original smells weak or does not smell at all).
• Uneven label with grammatical errors.
• A color that fades quickly after pouring.
• Lack of certificate on the package (look for the marking JIS K 2234 or Nissan Approved).

Buy antifreeze only from authorized dealers or trusted sellers (for example, Exist.ru, Autodoc).

Do I need to flush the system when replacing antifreeze?

Flushing is required in three cases:

1. If a different type of antifreeze is poured in (for example, instead of green it was red).
2. If sediment or rust is visible in the old fluid.
3. If the car was purchased secondhand and the replacement history is unknown.

For rinsing, use distilled water or special products (for example, Liqui Moly Kuhlerreiniger).