How does fuel oil affect the ignition of a furnace transformer?

Fuel oil can significantly affect the ignition of a furnace transformer by influencing the thermal stability and combustion efficiency. If fuel oil is contaminated or has a high water content, it can lead to poor ignition characteristics, causing incomplete combustion and increased emissions. Additionally, the presence of impurities in fuel oil can create deposits that may affect the operational reliability of the furnace transformer, potentially leading to overheating or failure.