Might as well add this pic in here; it's one that ozwrenches had for sale in 2016.

[Linked Image]

The description said that the cap has a half pint oil measure attached.

Cheers,
Gadge

"ODK Mods can explain it to you, but they can't understand it for you..."

"Crazy can be medicated, ignorance can be educated - but there is no cure for stupid..."