Originally Posted by Charger69RT8
This results in a 3.75% overage error for the odometer versus the 15% too fast error on the speed.

Is there anything that can be done to help or correct these old things? Clean, lubricate? Or just a lost cause and not worth it?


The odometer error is within the range of different pinion tooth counts. The speedo can be re-calibrated but it requires dedicated equipment a speedo repair shop has.

https://deluxespeedometer.com/


The INTERNET, the MISinformation superhighway