English to Portuguese Tech/Engineering Electronics / Elect Eng Sopradores, bombas a vác

Checking Performance on Check Fuels—This engine test does not have any satisfactory standardization fuel blend or blends to qualify the engine.
The Check Fuels are the most helpful means available to permit judgement of good performance.
11.2.1  Test one or more of the Check Fuels.

Check Fuels —Diesel fuel oils having properties other than CN that are typical of Specification
Warning—Check Fuel—Combustible.
Vapor harmful.

COMBUSTÍVEIS DE CONTROLE? DE ANÁLISE? DE VERIFICAÇÃO...?

Low Cetane Check Fuel, meeting the specifications in Table 3
Specifications for Secondary Reference Fuels and Check Fuels