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Directly heating the coolant is more fuel-efficient than using the engine's waste heat, reducing fuel consumption and emissions. [25] In general, coolant heaters burn 1/8 as much fuel as an idling engine would, simultaneously emitting 1/20 of the emissions and directing heat significantly faster to the passenger compartment. [26]
Alternative methods of warming an engine include: [5] Engine oil heater attached to the engine's oil pan with magnets. Engine oil heater inserted into the dipstick tube. In-line coolant heaters, which are installed into a radiator hose to warm the coolant (sometimes with a circulation pump to increase its effectiveness).
Deutz also manufactures oil-cooled engines. These can provide the same power as other engine designs, but in a smaller package, since they do not require the additional space to house a radiator. [citation needed] Deutz also makes engines with a tandem oil cooler/radiator configuration; these also do not require antifreeze or coolant agents.
Motor oil, engine oil, or engine lubricant is any one of various substances used for the lubrication of internal combustion engines. They typically consist of base oils enhanced with various additives, particularly antiwear additives , detergents, dispersants , and, for multi-grade oils, viscosity index improvers .
Core plugs can also sometimes prevent freeze damage to the motor. During the early stages of the freezing of the engine coolant a freeze plug will sometimes burst, and thus allow the coolant to exit the engine, before it might expand within the engine during the freezing process and potentially crack the engine block. [2]
Air-cooled engines do not require coolant service, and do not suffer damage from freezing, two commonly cited advantages for air-cooled engines. However, coolant based on propylene glycol is liquid to −55 °C, colder than is encountered by many engines; shrinks slightly when it crystallizes, thus avoiding damage; and has a service life over ...
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