Crossover owners Škoda Kodiaq Often faced with the issue of cooling system maintenance, especially when reaching a mileage that requires preventive maintenance. Errors in the selection of the chemical composition can lead to destruction of the radiator, pump and the formation of deposits in the cylinder block.
The manufacturer clearly regulates the requirements for coolant, and ignoring these standards can result in costly repairs. In this article we will analyze in detail what type of antifreeze is provided for the EA888 and EA211 series engines installed on this model.
The wrong choice of color or chemical composition is not just an aesthetic mistake, but a direct path to failure of the heat exchangers. We will analyze the technical specifications of the concern Volkswagen Group and we will give clear recommendations for topping up and complete replacement.
Official standards and fluid type
Cooling system of modern cars Škoda Kodiaq designed for the use of antifreeze with organic corrosion inhibitors. The main standard approved by the engineering department is the specification G13. It is this type of liquid that provides the optimal balance between protection against freezing, overheating and corrosion processes.
Previously, fluids of the G12+ standard were used on the conveyor, but for new generations of the model the transition to G13 became mandatory. This is due to a change in the chemical composition of propylene glycol, which is less toxic and has a higher heat capacity compared to ethylene glycol analogues.
It is important to understand that the color of a liquid is only a dye, and not an indicator of quality or chemical nature. However for Kodiaq the manufacturer uses a purple or lilac tint for marking G13. This allows you to visually distinguish the original liquid from incompatible analogues.
In some cases it is acceptable to use updated standards, such as G12++ or G40, if they meet the specifications TL 774 J or TL 774 G. But mixing different generations of antifreeze without first flushing the system is strictly not recommended.
Fluid compatibility and mixing
Many car owners wonder whether it is possible to add another type of antifreeze to the tank if the original one has run out. The answer depends on the chemical base and type of inhibitors. Mixing G13 with inorganic or hybrid antifreezes (for example, old G11) is unacceptable.
When incompatible compounds come into contact within the system, a chemical reaction occurs, leading to the formation of a gel-like precipitate. This sediment can clog the narrow passages of the radiator and heater, which will lead to overheating of the engine and failure of the interior heater.
- ✅ G13 compatible with G12++ and G40 — topping up is allowed without rinsing.
- ❌ G13 incompatible with G11 (blue/green) - complete replacement required.
- ⚠️ G13 incompatible with conventional antifreeze - risk of corrosion and clogging.
If you don’t know what’s in the system, the safest option is a complete fluid change and flushing with distilled water. Savings on topping up can result in replacing the cooling radiator, which is Škoda Kodiaq It's not cheap.
⚠️ Caution: Never mix antifreeze with tap water. Mineral salts and chlorine in tap water cause instant corrosion of aluminum parts of the cooling system. Use only distilled water to dilute the concentrate.
Compatibility chart and color coding
For clarity, we present a table that will help you navigate the variety of liquids on the market and choose the right option for your crossover. Remember that the color must match the color of the flowing fluid in the expansion tank.
| VW standard | Color (usually) | Chemical basis | G13 compatible |
|---|---|---|---|
| G12++ | Purple/Red | Hybrid (Si-OAT) | Yes, completely |
| G13 | Purple | Organic (OAT) | Basic standard |
| G40 | Lilac | Organic (OAT) | Yes, newer standard |
| G11 | Blue/Green | Inorganic (IAT) | No, it causes sediment |
Please note that modern standard antifreezes G40 are a logical continuation of the G13 line and have improved cavitation protection characteristics. For high mileage vehicles, the use of G40 may even be preferable, as they contain additional additives to restore the protective film.
If you see the inscription on the canister "Compatible with G13", but the color is different (such as red), be sure to consult your dealer or check the technical data sheet before use. Color coding is not always strictly followed by third party manufacturers.
- Once a month
- Before long trips
- Only when the lamp comes on
- I never check
Procedure for adding coolant
If the antifreeze level drops below the MIN on the expansion tank, it is necessary to urgently top up. Perform this procedure only when the engine is cold to avoid burns from steam and pressurized boiling water.
Open the hood and find the transparent plastic reservoir, usually located on the right side of the engine compartment (when viewed in the direction of travel). There are marks on the tank body MAX and MIN, between which the fluid level should be when the engine has cooled down.
- 🛠️ Unscrew the reservoir cap counterclockwise (be careful if there is residual pressure).
- 🌡️ Add liquid to the top line, using a funnel to prevent spillage.
- 🔧 Screw the lid until it clicks, ensuring the system is sealed.
After topping up, start the engine and let it idle for a few minutes. Turn the heater on to maximum temperature to pump fluid through the heater core and remove any air pockets.
⚠️ Caution: If the antifreeze level drops regularly, this is a sign of a leak. Check the pipes, radiator, pump and heat exchanger for leaks. Operating with low fluid levels will result in overheating and deformation of the cylinder head.
☑️ Checking the cooling system
What to do if the antifreeze turns rusty?
If the color changes from purple to red or brown, this indicates corrosion in the system. A complete replacement of antifreeze with washing with distilled water or a special flushing agent is required, since the corrosion inhibitors have lost their properties.
Complete replacement of antifreeze with your own hands
A complete replacement is recommended every 5 years or 150,000 km, whichever comes first. The procedure is more complicated than topping up and requires a drain container and a set of tools.
First you need to remove the engine protection and find the drain plug on the lower radiator pipe or on the radiator itself. Place a container with a volume of at least 6-7 liters, since the volume of the cooling system is Kodiaq with a diesel engine it can reach 7 liters.
Unscrew the cap and let the liquid drain completely. Don't forget to open the expansion tank cap to speed up the draining process. After draining, flush the system with distilled water until the drained water runs clear.
- 🚿 Flushing takes time, take your time to flush out all the deposits.
- 🔩 Screw the drain plug with a new sealing ring, observing the tightening torque.
- 💧 Fill new antifreeze through the expansion tank to the level
MAX.
Start the engine and warm it up to operating temperature until the radiator fan turns on. During the warming up process, the fluid level will drop due to air escaping - top up to normal. This is a critical step to eliminate air locks.
Before starting the replacement, buy a supply of antifreeze 1-2 liters more than the calculated volume. This is useful for compensating for losses when pumping the system and subsequent topping up if the level drops after cooling.
A high-quality replacement of antifreeze is impossible without carefully removing air pockets. Ignoring this step will lead to local overheating of the cylinders and failure of the interior heating system.
Frequent maintenance errors
One of the most common mistakes is using concentrate without diluting with water. Pure antifreeze has a higher freezing point and poorer thermal conductivity than a 50/50 mixture. For the Russian climate, a mixture with a freezing temperature is optimal -40°C or -50°C.
Another mistake is mixing liquids from different manufacturers, even if they are of the same standard. G13. Different additive packages may conflict, leading to sedimentation. Always use the same brand of e-liquid or concentrate from the same manufacturer.
You should also not neglect checking the density of the liquid with a hydrometer. Over time, the water evaporates and the concentration of alcohols changes. If the density is not as specified, frost protection may be insufficient in severe frosts.
Sometimes owners try to save money by buying cheap analogues labeled “G13 compatible” from unknown brands. Remember that the original liquid Škoda (VAG) undergoes rigorous testing for compatibility with seal materials and plastic parts used in the engine compartment.
⚠️ Attention: Using low-quality antifreeze can lead to destruction of the pump and thermostat sealing rings. Replacing these units with Kodiaq often requires removal of the engine or transmission, making repairs extremely costly.
Original articles and choice of brands
If you want to be sure of quality, use original canisters from Volkswagen Group. The original antifreeze is supplied in concentrated form and requires dilution with distilled water in a 1:1 ratio.
The main article of the concentrate is G13 for Škoda — G013A8JM1. For a ready-made solution (already diluted), look for the article number G013A8JM2. Series items are also popular TL 774 depending on the region of delivery.
- 🏷️ Original: VAG G13 (purple) is the best choice for warranty.
- 🌍 Analogues: Motul Inugel Optimal, Febi G13, Mannol G13 (check specifications).
- 🔬 Concentrate: Requires dilution with water 50/50 to obtain
-35°Cor-40°C.
When purchasing, pay attention to the expiration date. Antifreeze loses its properties over time, even in closed packaging. Do not take the liquid if more than 3-5 years have passed since production.
How to distinguish counterfeit antifreeze?
A counterfeit can be identified by the quality of the packaging: uneven seams on the canister, blurred label printing, absence of holograms. Also, fake liquid often has a strong chemical smell and leaves greasy stains on the surface, which the original should not have.
Frequently asked questions (FAQ)
Is it possible to add water to antifreeze in an emergency?
Yes, in an emergency, when the engine overheats due to lack of fluid, you can add distilled water. This will temporarily lower the boiling point and allow you to get to the service. However, after this it is necessary to check the density and, if possible, replace the mixture.
Why does antifreeze disappear quickly in the Škoda Kodiaq?
Rapid disappearance of fluid indicates a leak. Possible reasons: cracks in the pipes, pump malfunction, breakdown of the cylinder head gasket or leak in the radiator. Liquid can also leak into the cooling system through a crack in the oil heat exchanger.
What freezing temperature is antifreeze needed for Russia?
It is recommended to use a mixture with a freezing temperature -35°C or -40°C. For regions with harsh climates (Siberia, the Urals), a mixture with a freezing point is allowed -50°C, but not lower, since a too concentrated solution loses its heat capacity.
Is it possible to mix red and purple antifreeze?
If red antifreeze meets the standard G12++ or G40, mixing it with purple G13 acceptable. If it is ordinary red G12 or a low-quality analogue, you cannot mix it, this will cause a reaction and sedimentation.
How often do you need to change antifreeze in a Skoda Kodiak?
The manufacturer recommends the first replacement after 5 years or 150,000 km. Subsequent replacements should be performed every 5 years or as necessary if the fluid has lost its properties or becomes contaminated.