![]() See additive stability for more information. The new material is a soft solid that precipitates out of the fuel and can rapidly clog filters or create engine deposits. In the presence of free water, the chemical molecules will sometimes disassociate themselves from the hydrocarbon chain of the additive and combine with water molecules to form a new substance. This means that water and polar chemicals are attracted to each other. Certain chemicals in additives are polar. Water also contributes to or aggravates a number of additional issues, like the following: Damage caused by ice can be hard to correctly diagnose since the ice will melt and disappear long before a lab examination can occur. Engines and filters do not differentiate between dirt and ice. A fuel filter's job is to protect the engine by stopping hard particulate. They can create wear in fuel systems and (in large volumes) clog fuel filters. Ice: Free water in fuel can freeze, creating ice crystals that behave just like any other hard particulate. Then, under extreme pressure, it decomposes and releases hydrogen in a “mini-explosion” which enlarges the cracks and creates wear particles. Water is forced into microscopic cracks in metal surfaces. Spalling: Occurs due to hydrogen embrittlement and pressure. These water droplets impact a small area with great force, causing surface fatigue and erosion. Cavitation is caused by vapor bubbles rapidly contracting (imploding) when exposed to sudden high pressure, which causes them to condense back into a liquid. Pitting and Cavitation: Pitting is caused by free water flashing on hot metal surfaces. ![]()
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