What might haapen is the crankshaft counter weights will get into the oil and cause it to foam and possibly drop your oil pressure. Other than that, it might make a mess if it gets into the PCV system. You should just drain a couple of quarts and put it back on the mark.
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.