Apparently it can. The littel cog wheel needs to be pushed back on to engage
the screw wheel fully. Mine was just touching and was off way big. Pushed it
back and no problems. Pushing the  trip odometer can force the wheel out of
alignment.

William

> Anyone heard of a trip odometer that runs slower than the regular
odometer?
> A friend has one that he claims runs about 60% slower than his actual
> mileage.  Can the trip odometer slip?
>                               Jay