3weeks ago my crank case filled with diesel fuel . So I towed it home and changed out the oil and it fill ed up up again . So I took it to a local shop to see if they could figure it out . They found 2 bad injectors and thought that would fix things . So i picked it late Friday night and drove it around . Checked the oil and again full of diesel . Called the shop up and told them what happened again . They took another look and said 2 more injectors on the other side went . The owner of the shop said he would eat the labor and split the cost of the oil change . So I said yes but lets replace all 4 on that side . Again Friday night picked it up and by Sunday fuel in the oil . I took it back and they worked on it Tuesday . I called on Thursday and he had no good news for me . They aren't sure where the oil is coming from . Been almost a month and I haven't had my truck . I think he told me the last 2 injectors were good . What else could be wrong ?