Collection: Coolants

Engine coolants – how to choose the right coolant for your car

Engine coolant transfers heat through the cooling system and helps protect its components against corrosion, freezing and deposit formation. This category includes ready-to-use coolants and concentrates in various container sizes and formulations intended to meet different vehicle cooling-system requirements.

Ready-to-use coolant or concentrate?

Ready-to-use coolant is pre-mixed and normally requires no dilution unless the manufacturer specifically says otherwise. Concentrate must be mixed with suitable water following the product instructions and the required temperature protection. Do not assume that increasing the concentrate proportion always improves frost protection: the relationship is not linear.

Does coolant colour matter?

Colour is not a reliable indicator of coolant technology or compatibility. Red, pink, blue or green coolants from different manufacturers may contain different additives and meet different performance requirements. Terms such as G11, G12 and G13 should be checked against the specific product label and the vehicle manufacturer's requirements, not the colour alone.

What should you check before buying?

• The specification required by the vehicle manufacturer and the product's stated compatibility.
• Whether the product is ready to use or a concentrate.
• The quantity needed for topping up or replacing the coolant completely.
• The recommendations for mixing and coolant replacement in the specific system.

Before adding an unfamiliar coolant, consult the vehicle documentation and identify the fluid already in the system. If compatibility is uncertain, a complete replacement following the service procedure may be safer. The range includes brands such as K2, Moje Auto and Castrol, but specifications rather than brand or price alone should determine your choice.