Here are some Frequently Asked Questions about Diesel Engines
What Is Diesel Fuel?
Diesel fuel is a complex mixture of hydrocarbon molecules derived from petroleum crude oil. While the term “diesel fuel” includes products such as burner fuel, heating fuel, X-Grade, D-Grade, fuel oil and others, it most commonly refers to a distillate that is burned in compression combustion engines or home heating systems. Diesel fuel is ignited in an internal combustion engine cylinder by the heat of air under high compression – unlike motor gasoline, which is ignited by an electrical spark.
What Is BioDiesel?
Biodiesel is a clean-burning alternative fuel for diesel engines made from animal fats or vegetable oils, such as soybean oil. Pure biodiesel (B-100) contains no petroleum, is biodegradable and nontoxic. Pure biodiesel is often blended with petroleum diesel to create biodiesel blends, such as B-2 or B-5; this designation indicates a 2% or 5% biodiesel blend. Biodiesel blends can be used in most diesel engines with no modifications; refer to your equipment owner’s manual for details. Cenex® Biodiesel Fuels are produced using domestically grown soybeans.
What Does My Diesel Engine Smoke?
Diesel engine smoke is caused by incomplete combustion. White smoke is caused by tiny droplets of unburned fuel resulting from engine misfire at low temperatures; this smoke should disappear as your engine warms up. Black smoke can result from faulty injectors, insufficient air or overloading/over fueling the engine. Blue or gray smoke is the result of burning lubricating oil and is an indication the engine is in poor mechanical condition.
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