v_cruz said:
I was cleaning my bike notice the coolant level was low it is 8:30 at night.
Before you go pouring stuff in the overflow tank (and possibly end up breaking the cap), there are a couple of things you need to consider:
First, is the system
really low on fluid? Make sure that the coolant is at ambient temperature before checking that it is at the "cold" full level. If the coolant is hot you may not get a truly accurate reading.
Second, if you have lost coolant, where has it gone? The cooling system is closed, and any losses can only come through leaks in the system. Check the fasteners around the water pump too see if any fluid has leaked out there.
Lastly, if you do decide you need to add just a tiny bit of liquid (i.e. half a pint or so) you could probably get by just adding distilled water. You won't dilute the antifreeze too much by doing so.