Thank you futtock, but unfortunately there is no such vinyl under the bonnet nor any evidence that one was previously there. Would you be able to share a photo of yours?
The phosphoric acid in cola makes it useful for descaling kettles and bathrooms, too. I’d never thought of adding acid to home made penetrating fluid, though.
Hi Neil – that’s great, thanks.
Is there a workshop manual that lists these specifications (and others) that I could get hold of for future maintenance?
Peter