Quality Testing Requirements

What are the SGS Seal of Quality testing requirements?

• Research octane number and motor octane number:
  Measures how well gasoline resists engine knocking, which can damage the engine 
• Cetane number:
  Measures how easily diesel ignites. Higher numbers improve performance, reduce noise and emissions, and aid cold starts
• Density:
  Denser fuel provides more energy, improving efficiency and engine power, while lower density reduces emissions but may increase fuel consumption. Deviation from the quality requirement may signal fuel contamination 
• Sulfur content:
  Higher sulfur levels increase harmful emissions and reduce the efficiency of catalytic converters
• Aromatic content:
  Refers to compounds like benzene in gasoline. High aromatic content affects both engine performance and environmental health, as these compounds can be harmful and are known carcinogens
• Water:
  Water in fuel, often from poor storage or condensation, can cause corrosion, clog filters and damage the engine
• Microbial contamination:
  Microbes in fuel can create deposits that clog filters and damage engines
  
• Distillation:
  This shows how fuel evaporates at different temperatures, affecting engine start-up and emissions
  
• Flash point in diesel:
  Used as a safety classification property. Lower flash point is usually caused by contamination with gasoline and poses a safety risk during operation and handling. It can cause higher combustion temperatures, potentially damaging the diesel particulate filter
  
• Polycyclic aromatic hydrocarbons (PAHs):
  Harmful chemicals in diesel that can increase emissions, pose health risks and cause engine deposits if fuel quality standards are not met
  
• Cold filter plugging point:
  Indicates the lowest temperature at which diesel can flow through a filter. Important for ensuring engine operation in cold conditions
  
• Vapor pressure in gasoline:
  Needs to be adjusted for different seasons to keep fuel stable and efficient