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Can diesel and crude be mixed legally run on the highway?

Mixing diesel with crude oil and using it as fuel in vehicles on public highways is generally not allowed. Here's why it's illegal in many jurisdictions:

1. Fuel Standards: Countries and regions usually have strict regulations regarding the quality and composition of fuels used in vehicles. Mixing crude oil, which is a raw petroleum product, directly with diesel can alter the fuel's properties and result in emissions that exceed established standards.

2. Emissions and Pollution: Crude oil contains various impurities and contaminants that can lead to increased particulate matter, sulfur oxides, and other harmful pollutants when burned in engines. These emissions can contribute to smog, air quality deterioration, and potential health risks.

3. Engine Damage: Using a mixture of diesel and crude oil can damage engines. The presence of impurities and the different combustion characteristics of crude oil can cause wear and tear on engine components, shortening their lifespan and causing costly repairs.

4. Safety Hazards: Mixing diesel with crude oil may affect fuel stability and its behavior during transportation and storage. This can increase the risk of accidents, spills, and fires, jeopardizing public safety.

5. Legal Consequences: Operating a vehicle on public roads with a fuel mixture that violates emissions standards or fuel quality regulations can result in legal consequences. Depending on the jurisdiction, penalties may include fines, license suspension, or even vehicle impoundment.

It's crucial to use fuels that meet the specifications and standards set by relevant authorities to ensure the proper functioning of vehicles, reduce emissions, and maintain public safety. Therefore, running a diesel vehicle on a mixture of diesel and crude oil is typically prohibited on public highways in most countries.