at first i noticed alittle bit of oil on the oil cooler and i just wiped it off then the next time i went out for a ride i saw how dirty the oil cooler became on the front from oil all over it, but not enough to where it leaked onto the road or on my tire. i checked the hoses and didnt see a leak form that. its just flat coverd in dirt on the front . i cant tell if its a leak on the front of the oil cooler.