Antifreeze (Coolant Concentrate)
Antifreeze is the glycol-based concentrate mixed with water to make engine coolant that does not freeze or boil easily.
What is Antifreeze (Coolant Concentrate)?
A typical mix is around half antifreeze and half water, but the manufacturer's ratio applies. It contains corrosion inhibitors that protect aluminium, iron and seals. Coolants differ by technology, such as IAT, OAT and HOAT. Colour is not a reliable guide to the type, because different manufacturers dye similar products differently. Ethylene glycol is toxic and tastes sweet, so store it away from children and animals. Premixed coolant avoids mixing errors and is convenient for topping up.
How it works
Glycol lowers the freezing point and raises the boiling point of water.
Why it matters for your car
Too much concentrate reduces cooling efficiency. Check freeze protection with a tester before winter.
Other terms
- Automatic High Beam
- Battery Registration (Battery Coding)
- Chassis Straightening (Frame Straightening)
- CVT (Continuously Variable Transmission)
- Cylinder Block (Engine Block)
- FlexRay
- Gear Whine
- Head-up Display (HUD)
- Interior Light
- Lead Replacement Additive
- Load Cover (Parcel Shelf Or Tonneau Cover)
- Oil Temperature Sensor
- Orange Peel (Paint Texture)
- Paint Oxidation (Faded Paint)
- Rear Fog Light
- Recovery Points
- Side Impact Beam (Door Beam)
- Speed Limits When Towing
- Transmission Adaptation (Relearn)
- Wireless Phone Charging