The testing of an engine type or engine family to determine whether it meets the emission limits set out in this Regulation shall be carried out by using the following reference fuels or fuel combinations, as appropriate:
Maidir leis an gcineál innill nó an aicme innill a thástáil chun a chinneadh an ndéanann sé na teorainneacha astaíochtaí sceite a leagtar amach sa Rialachán seo a chomhlíonadh, déanfar í agus úsáid á baint as na breoslaí tagartha seo a leanas nó as na teaglamaí breosla seo a leanas, de réir mar is iomchuí: