no problem at all, if anything it'll lubricate your water pump.... Believe it or not, coolant/anti freeze is also a lubricant...What do i do if i accidently put a little oil(not even an ounce) in my radiator?
probably nothing, but I would still drain it out and refill it with the proper fluid. Oil and water will not mix so it may cause some trouble with circulating the coolant but with such a small amount... It probably can't hurt anything.
While it probably won't hurt your cooling system, why take a chance? Have the cooling system flushed. It's not difficult or expensive to do ( even if a shop does it for you ) and then you won't have to worry about it.
laugh at yourself and call yourself a dumdum.....it wont hurt anything.
Oil floats on water.
Stick a hose in the radator and run water into it to overflow a little.
it wont hurt nothing, sherry!. i put some in mine, just a cap full , it helps to lube the water pump. all it does is circulate through the cooling system.in matter of fact i have some in mine right now.