Hi first time on to learn more about my 96 f150 2wd 302 5 speed with overdrive. Just got it a month ago has 165000 original km. last weekend a noise that sounds like a dry bearing comes at higher rpms ( 2500 - 3500) intermittently. when i change speed by a few hundred rpm noise goes away. does anyone have any idea what to start looking for. look forward to many discussions in future