Why is diesel less durable in hot weather?

[Clay]

The quality of diesel has undergone significant updates and improvements. Adoption of polycyclic aromatic hydrocarbon technology: The reduction of polycyclic aromatic hydrocarbons can effectively decrease vehicle pollutant emissions. Therefore, in diesel vehicles, the standard for the mass fraction of polycyclic aromatic hydrocarbons has been substantially reduced from 11% to 7%. Additionally, the technology for detecting total pollutant content has been enhanced, raising the flash point index limit for diesel vehicles. China VI gasoline and diesel: China VI gasoline and diesel have reduced the content of aromatic hydrocarbons and benzene, while increasing the standard for total pollutant indicators. These indicators have reached the current EU standards for automotive fuels, with some even stricter than the EU standards. After a series of adjustments to these indicators, China VI fuel can reduce carbon monoxide emissions by approximately 59% and hydrocarbon emissions by about 42%, significantly mitigating the negative impact of vehicle emissions on the atmospheric environment.