I did not use thinners, it went on straight out of the tin. I cannot remember now much I used for the series as that was done piecemeal one panel at a time as I rebuilt it.
From memory the 110 took just over 2l for two coats on everything. I over ordered on my paint though and have 2l still sat on the shelf. This is good for touch ups as it means it is from the same batch. It also means everything else I also gets painted red like the vice I rebuilt for the work bench!