👉 Interstate fluid, often referred to as light mineral oil or diesel fuel, is a thick, viscous liquid used primarily in internal combustion engines. It serves as the primary fuel source, providing the energy needed to power vehicles and machinery. Interstate fluid is typically blended with other additives to enhance its properties, such as improving combustion efficiency, reducing emissions, and preventing engine wear. This blend ensures optimal performance across various operating conditions, from cold starts to high-speed driving. The fluid's viscosity and chemical composition are carefully controlled to meet stringent environmental and performance standards, making it a critical component in modern transportation and industrial applications.