Uv Dye:- This only needs to be added once to your system. If a leak were to occur this will show exactly where the leak is coming from. Without Uv Dye added to the system it is almost impossible to identify where the leak is coming from. This could save you a lot of money in the event of a system leak.
Antibacterial Refresh:- This is injected directly on to the evaporator inside your car to kill any bacteria, and to keep it smelling fresh and prevent any respiratory problems due to bacteria in the air. This also leaves the car with a pleasant sea breeze odour.
Both services usually cost £10 each. But have both together for only an extra £10 when you have your service.