Sorry for the bump, found this accidently and thought it may be of use to the poster. It is the War Department Technical Manual for this model and others.
Here is a link:
https://ia902304.us.archive.org/1/items/TM55-1030/TM55-1030.pdf
Also of note, page 12 clearly outlines proceedures you are obligated to perform…."Demolition to Prevent Enemy Use".
First of three options given simply says run it without oil.
Enjoy!