I have a 1957 Chevy 6500 dually 4 speed with the 261 in line 6 in it and I was driving it in the cold the other day. Who would of guessed with ohio weather. Then the speedometer just started buzzing really bad and the buzzing was increasing with the speed...then the speedo needle came off. Does anyone know what the best way to take care of this problem is? Someone told me to run grease down the cable but I don't know what he meant by that. I know the speedo cable goes to the tranny. Maybe run grease over that?