Motor oil gets polluted with dust, carbon particles, metal dust, and sludge over a period of time in the engine.
Modern detergent engine oils maintain the suspension of these impurities rather than permitting them to accumulate on the engine’s interior.
Letting these contaminants stay in the motor oil accelerates the wear of the engine. To eliminate these dangerous pollutants, engines are fitted with an oil filtration system.
Do you have to change oil filter every oil change? The answer is absolutely yes if your desire is for your car’s engine to last and maintain peak efficiency and performance.
In an attempt to create an acceptable filtering medium, a variety of materials have been investigated.
Cotton waste, plant fibers, metal, clay, paper, cellulose, blended media, and high-performance full-synthetic media have all been utilized in the production of this product.
At the present time, filters are divided into two basic groups, namely depth filters and surface filters. Various fibers are used to construct depth filters, whereas treated paper is used to construct surface filters.
Higher capacity and efficiency, as well as greater durability, may be achieved by the precise processing of this medium. In order to withstand the breakdown of hot oil, we use a resin-free synthetic media technology. Reinforced mesh material and pleated media make it more durable. Oil filters manufactured by AMSOIL use nitrile gaskets that stay flexible and have been tested to extraordinary distances in harsh conditions.
A molded element seal, roll-formed threads, and an anti-drainback valve made of premium-grade silicone are all included.”
A few filters, such as those used in large vehicles and construction equipment, are built of metal plates that are tightly spaced.
The filtering element, or cartridge, in some oil filters is housed in a permanent metal container, whereas in others the filtering element is replaced. The majority of filters are one-piece disposable devices, meaning that the whole filter is disposed of.
Most of the time, the filter assembly is installed on the bottom or side of the engine. Only one kind of filter is used, and it is located within the oil pan.
“Who makes the best oil filters for cars? The capacity of a filter to catch contaminants is referred to as its efficiency. The greater the efficiency of a filter, the greater the amount of impurities it will remove from oil. In compliance with industry-standard ISO 4548-12, AMSOIL Oil Filters have a filtering effectiveness of 99 percent at 20 microns, making them one of the most efficient oil filters available on the market.
The efficiency claims of other rivals are likewise 99 percent; however, they are for bigger particle sizes of 30 to 40 microns.”
The filter is surrounded by oil that is injected into the container. Centrally located is an outlet pipe that receives oil after passing past the filtering unit. It is subsequently returned to the bearings or the sump, depending on the system’s configuration.
“What is the best oil filter for cars? To maintain engine components lubricated at all times, the proper flow of oil is crucial. Engine wear is reduced due to smaller fibers in AMSOIL Oil Filters, compared to fibers utilized in standard filters.
During cold-temperature warm-ups, our filters enable oil to flow more freely than cellulose filters.”
Full Flow Filter System
All of the pump’s output passes via the filter on today’s engines. Full-flow filtration is the name given to this kind of system.
The oil is sent to the oil galleries after passing through the filter. Oil is filtered before it reaches the bearings in this manner. A tiny relief valve opens in the case that the filter gets blocked, allowing the oil to go straight to the bearings.
A shortage of oil might cause damage to the bearings, therefore this prevents this from occurring.
“The quantity of impurities that a filter can store while still functioning is referred to as its capacity. More tiny, wear-inducing impurities can be captured by AMSOIL Oil Filters than can be captured by competitors. They are more durable and guarantee that the oil is filtered appropriately.”
By Pass Filter System
Older cars have typically utilized a bypass system but there are modern, highly advanced by pass filter systems available from the after market industry.
The full-flow system filters the oil before it gets to the bearings, while this bypass method does not. Nevertheless, it is frequently filtering and delivering part of the motor oil to the sump.
“How often should I change my oil filter in my car? In order to preserve oil from wear and deterioration, the AMSOIL Bypass Oil Filter (EaBP) utilizes the most advanced filtering technology. The AMSOIL Ea Bypass Filter works in combination with the engine’s full-flow oil filter to filter oil on a “partial-flow” basis.
When the oil pump is running, it pulls about 10% of its capacity and captures the wear-inducing impurities that full-flow filters cannot. When using AMSOIL Ea Bypass Filter for oil filtration, all of your engine’s oil is cleaned multiple times an hour.”
When To Replace Oil Filters
All oil filters ultimately get clogged if they are not changed.
The more impurities that the filter can remove from the engine oil, the sooner it will clog. Intervals between filter changes are determined by the same factors as those outlined in the section on
motor oil changes.
The interval between replacements varies but is typically between 3000 and 7500 miles. The majority of OEM manufacturers suggest replacing the filter every time the oil is changed.
“Who makes the best oil filter for synthetic oil? More contaminants are trapped and held by AMSOIL Oil Filters than traditional filters because of their sophisticated synthetic media. AMSOIL oil filters provide extended service intervals, for more flexibility while decreasing the time spent maintaining the engine.”
Crankcase Ventilation System
It is possible for exhaust gas and unburned gasoline to pass through the piston rings and into the crankcase even in brand new engines.
As a result, pressure builds in the crankcase, a phenomenon known as blowby. Blowby will cause oil to leak through the oil seals unless it is vented properly. The removal of gases and raw fuel is also vital since they may cause moisture and acids to build in the engine oil.
During the heating process of the engine, the undesirable blowby gases will evaporate and be removed by the ventilation system.
Without their removal, the motor oil will get polluted very rapidly, and the engine would be harmed. A road draft tube was used to vent the crankcase on older engines. The engine had a road draft tube that went beneath it.
Air was drawn through a breather cap by a partly vacuumed end of the pipe while the vehicle was moving. For dust and grime protection, the cap was filled with oil-soaked metal wool. A baffle in the road draft tube stopped oil vapor from passing through.
As a result, air pollutants were released into the atmosphere and blowby wasn’t completely removed, causing unnecessary pollution. Positive crankcase ventilation, or PCV, is used in all contemporary engines.
How The Positive Crankcase Ventilation (PCV) System Works
Fresh air is drawn through the engine via the PCV system, which takes advantage of the vacuum created by the intake manifolds.
Clean air is drawn in using either the breather cap, which is an open system, or the air cleaner, which is a closed system, depending on the configuration. In order to prevent fumes from exiting the engine during times of high crankcase pressure or while the engine is stopped, all engines now use the closed system.
The engine draws the air through it, where it mixes with the gases in the crankcase. Following that, the combination of air and gases is sucked into the intake manifold and burnt in the cylinders.
A PCV valve regulates the amount of air passing through the crankcase.
How Motor Oil Is Sealed Within The Engine
Gaskets, sealants, and oil seals are responsible for keeping oil in the engine. To prevent oil leaking between the engine block and the oil pan, a silicone rubber oil pan gasket, for example, might be employed.
In certain contemporary engines, room temperature vulcanizing (RTV) and anaerobic sealants are used in conjunction with or in instead of some gaskets.
Crankshaft seals are installed at both the front and back of the crankshaft. Some crankshafts are equipped with an oil slinger that is cast into the shaft. When any oil escapes beyond the bearing, the slinger captures it in a catch trough that returns it to the sump.
Oil Pressure Gauges & Indicators
Oil pressure may be measured by using an oil pressure gauge or warning light that is positioned on the dashboard.
The sender unit used by an electric oil pressure gauge is different from the sender unit used by an electric water temperature gauge.
When the pressure goes below a set level, certain cars activate a warning light to alert the driver. There is also a low crankcase oil level warning light system that illuminates when the oil level is too low. The light indicates that the system has failed, but it does not represent the actual oil pressure.
Measuring Motor Oil Levels In An Engine
Dipsticks are long metal rods that are used to monitor the level of oil in the crankcase sump of an automobile. The dipstick is kept in a tube that is just long enough to allow the end of the dipstick to protrude into the sump.
Certain dipsticks are permanently attached to the oil fill cap. It may be removed and the oil level in the sump checked by inspecting the dipstick to determine the amount of oil.
Keeping Motor Oil Cool
Oil absorbs a great deal of heat from the pistons and cylinder walls, and it gets very hot. It is critical that the oil be able to expel any excess heat that it has accumulated. Typically, this is performed by the airstream flowing over the thin oil pan, which draws a significant amount of heat from the engine’s operating fluid.
Several oil pans have been designed with cooling fins cast into them to help in the cooling process. By keeping the cylinder block and head region within a safe temperature range, the cooling system helps to reduce the amount of oil heat that is exposed.
As the oil passes through the filter, it releases some heat into the airstream, and the whole engine surface emits heat as well. All of these forms of heat dissipation will, in most cases, keep the oil from being overheated.
Auxiliary coolers are standard equipment on many heavy-duty and high-performance engines, as well as on certain standard-duty engines that are periodically subjected to excessive operating loads like trailer hauling, hilly roads, or exceptionally hot weather.
There have been a variety of approaches. Depending on the design, the oil may be cooled by air or coolant. Between the engine block and oil filter, there is an engine oil cooler. The tiny discs that make up the oil compartment are cooled by the engine coolant.
During the oil’s passage through the cooler, it is forced to travel through the thin disc chambers, where it emits heat.
Summary Of Automotive Lubrication System
We’ve reached the end of our blog series on the basics of the automotive lubrication system. Let’s summarize.
Lubricating motor oil is the weapon of choice for combating friction, the scourge of all motors. Motor oil should be able to lubricate, seal, clean and cool.
There are several elements to consider when selecting the right oil for your vehicle’s engine, including its viscosity (weight) and its service grade (SN or CK-4.) The oil pump draws the motor oil from the sump via a strainer. A network of oil galleries and tubes is then used to distribute the motor oil to the various bearings. A pressure relief valve is used to limit the amount of oil pressure that may be applied to the engine. The rotor and gear styles of oil pumps, which are either rotated or operated by the camshaft, are the most often utilized.
When engine oil enters the bearings, it forms a thin layer that separates the moving components. It is flung forth in all directions when it passes through the bearings. On certain portions, oil drips down on engine components and is splashed against others. The rotating components produce an oily mist that lubricates the remaining components. It is then recirculated back to the sump.
Ventilation is used to remove moisture, hot gases, and excessive pressure from the system. A full-flow oil filter is used in modern engines.
This post also answered the question “do you have to change oil filter every oil change?” Even if the oil is filtered, it must still be changed to maintain engine life and performance. The number of miles traveled and the driving conditions influence how long motor oil drain intervals will be. A gauge or a warning light may be used to monitor oil pressure in a vehicle.
The dipstick may be used to determine how much oil is in the sump. Oil coolers may be found on certain engines.
We hope you enjoyed our series on the basics of automotive lubrication systems. Stay tuned for upcoming blog posts. Thank you for reading!