Spitfire oil pressure cold start Mann filter twin anti drain valves

[@marcusbewley1]

Well done Sherlok Ole Boy. think we got the dredded Triumph cold start rattle sorted for good.

[@rotoflex]

It's interesting, but I think would be more engaging to the audience if it were informed more by the techniques of the pre-talkie era László Schäffer.

[@johnsmith-fx2sm]

Dash needs a good polish...