There is usually a drain tap at the bottom - centre front of the radiator. Twist anti clockwise and empty a bit out and top up with a concentrate coolant - should all be good. If the van got back home without issue you should be fine so don’t panic too much![]()
she drove home fine but I went onto Google and that was it my life was over never mind the van . I even booked a checkup thanks for your help . I
As Jim says there's usually one on the rad or low down on the left hand side of the engine block. When you do top the system up only fill to about an inch below the filler cap as you need to account for expansion, much more than that and it will just lift the cap and throw coolant out when it warms up.