Last month in Driving Old Cars, I covered how the R-9 Overdrive (Econo-Drive) works, along with testing and repairs (see SW Archives).  This month, I will conclude with Trouble Shooting, analyzing the Conditions, Possible Causes, and Corrections.

I hope this helps to keep your overdrive operating as it should.  Overdrives really let the engine relax, allowing the car to smoothly travel down the road without strain.  See you next month.  Preserve, restore, and keep 'em driving