Hi Keith This is very troublesome turbo you need to allow 8 hours for this new oil pump strainer in sump(cant be washed out)new feed pipe kit my turbo man tells me not to put back banjo bolt filter gauze as this will block again,when turbo you have to measure oil flow returning to sump,make sure nut is not missing from intake impeller of old turbo and turbo specialists will not give you warranty on new unit, you have to advise your customer of this. Best of luck? Con