can't really tell if gas milage has gone down from such a small leak. i dont even see a leak anywhere only smell some fumes. so at most i'd lose like .1 mpg from that i would think.
I went ahead and put silicon around all the gaskets fuel pump, sending unit filler neck gasket connecting to the gas tank. but still kind of smell the fumes. if anyone knows where else the fumes can be comming from in the trunk let me know.