Tank next to radiator

[fastnfurious]

Tbh i feel a bit of a prick asking you this, but whats the tank directly beside your radiator for, i was about to put water in it then i thoght id play it safe and ask you guys first

[3cott]

Its for the water :P

[Chico999]

Water/coolant expansion tank

Fill it with water :p

[Meto]

Don't just fill it with water though. Mix some antifreeze/coolant in with it- Keeps it from freezing in winter and keeps it cooler in summer.

[fastnfurious]

thanks guys