My 2001 Tracker has lost all its oil. on 2001 Chevrolet Tracker

My 2001 Tracker has lost all it oil. The oil sprayed out over the front bumper. Any idea where the leak is coming from as we can't see anything.

Asked by for the 2001 Chevrolet Tracker
We cant see anything either! To many possibilities. ANY work done lately, oil changed, belt replaced or anything else?
Oil cap on and tight? Sure it is engine oil not AT fluid? If it is auto. trans. you did not say, also 3 engine options but a leak is a leak!
Happen all of a sudden? Oil light come on? The more we know abou your problem, the better your answer will be.