The 3 HP petrol/paraffin engine was introduced around 1922 to satisfy
the export market for a well engineered, economical and reliable engine.
Few horizontal engines are in preservation in the UK, the majority are
found in New Zealand and Australia which reinforces the export theory.
Indeed, many of the earlier Wolseley engines (Styles 1-4) are found
in these countries since there was a large export market at that time.