if it is coming from the frount and draining to the back. i would say the O ring just left of the conector on the HPOP there is a plug it took me 3 times to get mine to seal. it takes a hi presher O ring not the other ones you can get. or if it is by your turbo you have 2 o rings ther to but you should be able to see where it is coming from so you know what to fix. clean it good and look for the oil.