The factory grease inside the speedometer does not last forever. It was designed to last for the normal life span of the car(s) in daily usage. But we are at least double or triple past that time frame now. At least once every 40 years all speedometers need torn down, inspected, cleaned and re-greased. After that the speedometer needs re-magnetized and then calibrated.
Delco made a special grease just for this and other spinning shafts. When you are going 60 MPH down the freeway your speedometer cable is turning the input shaft at the back of the speedometer 1,000 RPMs.
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Peter Serio
Owner, Precision Pontiac
Last edited by Peter Serio; 04-24-2012 at 12:15 AM.
Reason: spelling
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