Open upper hose pipe of radiator from engine side and you can see if its present there.
Open radiator cap, start engine and if you see coolant/water flowing then you don't have it.
Start engine and keep touching both hose pipes regularly after short intervals. If both pipes feel hot then you don't have it.
If gauge come to 20-30% on highway, then you don't have it.
Enough or want more? 