Re: Morticus' Packard 200 Deluxe Touring Edition

Posted by TxGoat On 2023/7/20 7:27:31

In addition to the fresh, multi-grade detergent oil, adding a quart of Marvel Oil or Rislone to the crankcase may be helpful with stuck or gummy lifters, rings, and valves. Don't overfill it.

Adding a pint of Sea Foam or Marvel Oil to the gas tank can also be helpful. A pint of either product to 10 gallons of gas would be enough.

I'd run the engine as you have been doing, avoiding either extended idle periods or high engine speeds.


A squirt oil can with a 50-50 mix of Sea Foam and Marvel Oil can be used to oil up the rings and valve guides. Run the engine until hot, then just before you shut it off, pump the mixture into the intake with the motor idling. Give it half a dozen or more healthy squirts, then shut it down and let it sit overnight. If you have the valve covers off, squirt a shot or two of the mixture directly onto the valve stems and lifters.