## AUTOSCHLÜSSEL C11 Ready Mix -36°C BLUE
**AUTOSCHLÜSSEL C11 Ready Mix -36°C BLUE** is a ready-to-use coolant designed to provide reliable **frost and corrosion protection** for water-cooled combustion engines. The pre-mixed formulation is suitable for year-round use and provides effective protection for the engine cooling system.
The C11 formulation is **free from nitrites, amines and phosphates** and is suitable for engines manufactured from cast iron, aluminium, or a combination of different metals.
It is particularly suitable for **light-alloy engines where effective aluminium protection is required at elevated operating temperatures**. The formulation also helps protect cooling system components against corrosion without negatively affecting coolant hoses or cylinder head gaskets.
### Key Features
* Ready-to-use coolant
* Frost protection down to **-36°C**
* Reliable corrosion protection
* Suitable for year-round use
* Suitable for cast iron and aluminium engines
* Suitable for engines made from a combination of metals
* Enhanced protection for light-alloy engines
* Free from nitrites, amines and phosphates
* Suitable for water-cooled combustion engines
* No negative influence on coolant hoses or cylinder head gaskets
### Specifications
* **ASTM D3306**
* **SAE J1034**
### Application
AUTOSCHLÜSSEL C11 Ready Mix -36°C is designed for use as a coolant and heat-transfer fluid in water-cooled combustion engines. It can be used in cooling systems containing cast iron, aluminium, or mixed-metal engine components.
**Important:** Always follow the vehicle manufacturer’s recommended coolant specification and application instructions.
