Anti knock additives for diesel engines

As did my RC planes / boats, along with a 'clunk nozzle'. ;-)

Cheers, T i m

The Daimler-Benz DB601 in the Bf 109 (not Me!) had direct fuel injection.

Miss Shilling's Orifice was only used on the Merin until an anti-G version of the SU carburettor was designed. This was later replaced by the pressure diaphragm Bendix carburettor. There was also a Stromberg type.