head Gass..........................

heya there i was looking at my engin 2 day and i fond a bit of oill near the head gas, i got a pic it dont look like a lot but the rover has a past hiss about the head il get the pic on hear ASAP i have marked where i fond the oill can some one tell me if it is the head about 2 go. and the water seem very low 2 :/