This color educational film is about how lubricants are derived from crude petroleum and how to improve the quality of lubricating oil. This is a 1949 film.
| Actor | Role |
|---|---|
 Ken CarpenterNarrator | Narrator |
 Stan FrebergNot listed | Not listed |
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This color educational film is about how lubricants are derived from crude petroleum and how to improve the quality of lubricating oil. This is a 1949 film.
| Actor | Role |
|---|---|
| Ken CarpenterNarrator | Narrator |
| Stan FrebergNot listed | Not listed |