I had my 2.7 Intrepidengine rebuilt.Bored .030 over. It runs great. After about 4000 miles the oil sensor started leaking. It isn't leaking at the threaded part that goes into the block, it leaks at the center of the oil sensor. I change the sensor and the same thing, 4000 miles it starts leaking again. Done that now 3 times. What's going on. Hope someone can explain this one and giveme some advice. Thanks..........Jim