Leak under pssenger front bumper, seems greasy but no strong odor? on 2003 Hyundai Santa Fe

just noticed this morning. 2 days ago I filled up my gas tank and overfilled it accidentally. not sure if that would have anyting to do with it or not. car is running fine, just has this leak?

Asked by for the 2003 Hyundai Santa Fe
poss lower corner of radiator. have it pressure tested to be sure
Also IF auto. trans. could be a line leaking at rad.