[Healeys] Tachometer? or tachometer cable?

[Shop at " Just Brits "]

<< Pull out the cable and sheath, clean both thoroughly, lightly 
lubricate the
cable--some like grease, Ed likes graphite, some like nothing, I like 
silicone
oil--and replace. >>

TWO [2] reasons:

1st]  Locksmith/Speedo Shop Owner said so 45+ years ago.
2nd]  EVERYTHING you mentioned Bob, COLLECTS dirt !!
...........NOT a "friend" of the core <G> !!

Ed