Chilly Willy is a pre-mixed high performance inorganic coolant /antifreeze package for old and modern vehicles.
Made from the finest Euro spec glycols, anti-corrosion and anti-foam agents to provide superior protection.
Contains 40% MEG
Freezing Point: -25 degrees C (ASTM D1177)
ASTM D3306/D4985; SAE J-1034; British & Fed. Standards.


Chilly Willy is ready to use as complete replacement or as a top up for all radiator types.


Simply pour into the radiator filling reservoir until it is full, then run the vehicle until normal operating temperature is reached.
Continue to top up while vehicle is idling until the full level is maintained.
It is recommended that all old coolant is flushed using Wynn’s Radiator Flush before replacing with new coolant.
Chilly Willy should not be mixed with OAT coolant


12 x 1 Litre
6 x 2 Litre


Cooling System

Cooling system problems, such as leaks and insufficient cooling due to fouling of the system, are the primary cause of vehicle breakdowns. To prevent these problems Wynn’s recommends radiator treatments.

Cooling System