The following is a summary of Oil Cap changes. The data and pictures on this page are from research done by Gail Rodda; Pictures are of parts removed from original cars by club members.
| Date | Factory Number | Change | Photo |
|---|---|---|---|
| 1909-12 | n/a | Brass, 6 notches | PHOTO | 1913-14 | n/a | "Made in Usa" Added, 1 line | PHOTO | 1913-14 | n/a | "Made in Usa", 2 lines | PHOTO | 1915 | n/a | Changed from Brass to Steel | PHOTO |
| 1916-18 | n/a | Steel, No Ford Script | PHOTO |
| 1918-27 | n/a | Steel, Larger Size, 3 notches | PHOTO |
| Reproduction | n/a | Not Original, 3 notches | PHOTO |
Many thanks to Gail Rodda for supplying the Information and pictures on this page.
For more information of the identification of Model T Ford parts refer to The Model T Ford Parts Identification Guide, by Gail Rodda.
