
How does oil filter work?
- The filter has a can and sealing gasket, which keeps it at the surface of the engine. ...
- The actual filter is found in the can and this is what keeps debris from reaching the engine.
- When oil is filtered, it goes through a tube and into the engine.
- But there are also two types of valves. ...
- Finally, there are discs at both sides of the actual filter. ...
What is an oil filter and what does it do?
The oil filter helps remove contaminants from your car engine’s oil that can accumulate over time as the oil keeps your engine clean. The importance of clean motor oil Clean motor oil is important because if the oil were left unfiltered for a period of time, it could become saturated with tiny, hard particles that can wear surfaces in your engine.
What's is actually inside an oil filter?
What's Actually Inside an Oil Filter?
- TAPPING PLATE. This serves as the entry and exit point for oil. ...
- ANTIDRAINBACK VALVE. Because the oil filter is typically located toward the middle or bottom of an engine, this rubber valve has a flap that blocks oil from draining back ...
- FILTER MEDIUM. ...
- PLEATS. ...
- CENTER STEEL TUBE. ...
- RELIEF VALVE. ...
- END DISC. ...
- RETAINER. ...
What is the purpose of an oil filter?
At the most basic level, oil filters serve the purpose of preventing contaminants, such as dirt and debris, from reaching the oil in your vehicle. This is important because grit and grime in your oil can damage engine surfaces and components while circulating through the engine’s systems instead of doing its job of lubrication.
What direction does oil flow through a filter?
With typical canister-type filters, it is standard for oil to flow from the outside in. This means that the oil travels through the cylindrical filter media from the outward-facing surface into the inner core.

What does an oil filter actually filter?
Your car's oil filter removes waste, too. It captures harmful debris, dirt, and metal fragments in your motor oil to keep your car's engine running smoothly. Without the oil filter, harmful particles can get into your motor oil and damage the engine. Filtering out the junk means your motor oil stays cleaner, longer.
Does oil filter really make a difference?
Your car's oil filter prevents dirt and debris from entering your car's engine, helping keep your car running optimally for a long time. Oil filters also help prolong the life of your oil, allowing you to go more miles before an oil change.
How do screw on oil filters work?
1:0610:30How Lubrication Oil Filters Work - YouTubeYouTubeStart of suggested clipEnd of suggested clipThis is actually a spin on type filter. It's a screw thread in this section here and the screwMoreThis is actually a spin on type filter. It's a screw thread in this section here and the screw thread allows us to screw directly onto the engine. And then tighten the filter up onto the engine.
What happens if you dont put oil in the oil filter?
This could lead to serious damage to the engine to the point that it needs to be replaced. As the aged engine oil thickens and becomes sludge, the engine will have to work harder. This means that you need more fuel for the same amount of power.
How long will an oil filter last?
Usually, the mileage you can get from an oil filter is roughly 5 to 8 thousand miles. Some might recommend changing the oil filter every 10,000 miles, but that is a bit too long for most cars. Not so long ago, oil filters and oils were to be changed every 3,000 miles.
Can I change oil filter without changing oil?
Yes, you can absolutely change your oil filter without emptying the oil. The placement of the oil is actually untouched by a filter change. If any oil comes out, it is only what is trapped beyond your anti-drainback gasket inside the filter.
Which direction do oil filters flow?
With typical canister-type filters, it is standard for oil to flow from the outside in. This means that the oil travels through the cylindrical filter media from the outward-facing surface into the inner core.
How does oil circulate through an oil filter?
The engine's oil pump moves the oil directly to the filter, where it enters from the holes in the perimeter of the base plate. The dirty oil is passed (pushed under pressure) through the filter media and back through the central hole, where it re-enters the engine.
Does synthetic oil require a special filter?
Every major motor oil manufacturer says you do not need a special or different oil filter when using synthetic oil. The better quality an oil filter is, the better job it will do in filtering contaminants.
Why have I not changed my oil in 2 years?
In fact, if you wait too long for an oil change, your smooth and clean oil will turn into dirty sludge. When this happens, your engine must work harder to fight through the buildup of muck. It loses its lubrication, and decreases heat absorption. This means that your car will be susceptible to major issues.
Is hand tightening an oil filter enough?
What is this? The general rule of thumb is that oil filters should be hand tight, plus an additional quarter turn. This will ensure that the filter is secure, but not too tight. Over-tightening can cause damage to the filter or your car, and it can also make it difficult to remove the filter in the future.
Can I use the same oil filter twice?
No. Just change the filter as normal. After the new filter is installed, run the engine for a couple minutes, then shut it off and allow several minutes for the oil to settle in the sump. Check the oil level and top-off as needed to make-up for the oil removed with the old filter.
Does your oil filter matter?
"Filters are filters, it doesn't matter what kind of oil you're using," says Dennis Mott, automotive professor at Centennial College in Toronto. Filters are the kidneys of your engine, and they're not fussy – they'll screen debris out of any engine oil, whether that oil is conventional or synthetic, Mott says.
Should you change your oil filter every time?
Many manufacturers recommend that the oil filter be replaced every second time you get your oil changed. So, if you're on a 3,000-mile cycle you'd change your filter every 6,000; if you're on a 6,000-mile cycle (as with most modern vehicles) you'd change out every 12,000.
Is it worth getting an extended life oil filter?
Extended life oil filters make a difference If you have a vehicle that undergoes prolonged oil change intervals, an extended life oil filter is a good idea. Spending a little more on your filter will save you both time and money in the long run, while also protecting your engine more efficiently.
How long do oil filters last with synthetic oil?
5,000 to 10,000 milesIndustry consensus is that synthetic oils perform better and last longer — anywhere from 5,000 to 10,000 miles — before needing replacement but the premium oil also is much pricier than conventional oil or synthetic blends.
How does an oil filter work?
Here is an overview of the oil filter parts to help you better understand how an oil filter works: Tapping plate/gasket: This is where oil enters and exits the oil filter.
Why do we need oil filters?
At the most basic level, oil filters serve the purpose of preventing contaminants, such as dirt and debris, from reaching the oil in your vehicle . This is important because grit and grime in your oil can damage engine surfaces and components while circulating through the engine’s systems instead of doing its job of lubrication.
What are the end discs on a filter?
End discs: On either side of the filter medium lies an end disc, usually made of fiber or metal. These discs prevent unfiltered oil from reaching the center steel tube and passing into the engine. They are held firmly in place against the tapping plate by thin pieces of metal called retainers.
What is the name of the hole where oil enters and exits the oil filter?
Tapping plate/gasket: This is where oil enters and exits the oil filter. It is comprised of a center hole surrounded by smaller holes. Oil enters through the small holes on the outskirts of the tapping plate, also known as a gasket, and exits through the center hole, which is threaded to attach the part to your engine.
Why does the relief valve work?
At low temperatures, however, the oil is too thick to pass through the filter medium. The relief valve allows small amounts of unfiltered oil into the engine to meet lubrication needs until the oil has heated enough to pass through the oil filter normally.
How do oil filters work?
We’ve established that oil filters remove impurities from the oil, but how do oil filters work? Well, the oil enters the filter via the outside of the gasket – sometimes called the tapping plate – before flowing through a several filter mediums. Once the oil is cleansed, it flows back up the centre though a steel tube. It’s stopped from flowing backwards due to an anti-drain back valve.
How long does a synthetic oil filter last?
Their casing is usually larger with a larger oil volume, and will last usually from 7,000 to 25,000 miles.
What are the different types of oil filters?
You get what you pay for when it comes to oil filters, and usually you’ll find yourself with four filter options: standard oil filters, high-performance oil filters, racing filters, and synthetic filters.
How many miles between a canister and a spin on filter?
Soon after, canister type filters were replaced by spin-on filters, and these are now used almost universally today, allowing for 10,000 miles between each service for most cars.
Why do we need to replace oil filters?
Because a cold engine produces more harmful by-products of combustion than a hot engine does. Also, it doesn't get hot enough, and doesn't stay hot long enough to burn off some of those pollutants. That means more work for the oil filter. Either way, the filter can't hold an infinite amount of toxins. That's why we replace the oil filter ...
Why replace oil filter with every oil change?
Either way, the filter can't hold an infinite amount of toxins. That's why we replace the oil filter with every oil change. It's a little amount to spend to protect the very expensive engine. It makes sense, right?
What Does It Do?
As the name implies, it filters the engine oil. Why is that necessary? Because the inside of an engine is a dirty place. As fuel burns, it produces many harmful byproducts. Those are things like ash, chemical toxins, moisture, and worst of all, sludge. Sludge is that gooey, thick, messy substance you might see accumulating under the oil fill cap. If you left all those pollutants to circulate freely with the engine oil they would soon destroy expensive internal engine parts.
Does oil filter life depend on engine?
The life and longevity of your engine depend s greatly on its oil filter. Ignore it, leave it on too long, and you could be facing some very expensive repair bills. To avoid all that trouble, let's spend a few minutes discussing the critical component that wields so much power over our engine's life span. 2.
Do oil filters go into the recycle bin?
They are small, disposable and inexpensive. We usually don’t give them much thought; into the recycle bin they go after every oil change. So, how important can that little oil filter be?
How does an oil filter work?
The oil filter works to remove contaminants from engine oil, extending the life of the engine and maintaining high oil quality, which naturally degrades over time. The oil pump sends used oil through a filter element, removing the particles and allowing the oil to pass through.
What is the role of oil filter?
Oil filters play an integral role in maintaining proper oil quality and supply. Over time, oil takes on tiny particulate matter and minuscule metal shavings from the combustion process. If unchecked, these particles can accumulate and damage the pump, engine bearings and any surface the oil passes under pressure, such as cylinder walls.
Why is oil important in an engine?
The importance of a properly oiled engine cannot be denied. With all the rapidly moving parts working in such precise proximity to one another , oil helps remove heat and ease movement to reduce friction. Too little, too much, incorrectly pressurized or contaminated oil spells quick and expensive trouble for your engine.
How does a bypass valve work?
Oil is forced through the outside holes through the filter, and the engine picks it back up through the main chamber. The bypass valve exists on the boundary between used and filtered oil and opens when the pressure rises enough to indicate a problem with flow.
What happens when oil bypasses the filter?
A bypass valve is incorporated in the engine's filter assembly to handle that situation, but once the oil bypasses the filter no cleaning action takes place.
Why do oil filters have magnets?
A few filter manufacturers are extolling the virtue of placing magnets in the filters to trap metal particles. They claim that magnetic forces stabilize the oil molecules; that the longer the magnetic field is in place the greater the benefit; that fuel mileage is increased; oil consumption and emissions are decreased; and engine power is increased.
What is the most important feature of a filter?
The most important feature of a filter, if you think about it, is the gasket . It has to seal the oil in the system for thousands of miles, in an atmosphere of heat and vibration. Gasket quality is very important, and low-priced filter manufacturers tend to use gaskets that get hard and brittle after just a few thousand miles. Leaks - and worse - can result.
What is a spin on oil filter?
The original canister-type oil filter was quickly replaced by "spin-on" filters, except in a number of British sports cars that suffered from a lack of development funding. The spin-on filter is universally used today. Today's engines run so cleanly that 10,000-mile oil change intervals are considered normal, but the job ...
Why does oil change so often?
It always has done so, but in early engines the oil was changed so often (due to burning and poor oil quality) that no filtration was required.
What is oil used for in an engine?
Oil does a number of important things in an engine. It helps cool the engine by transferring heat; seals the gap between piston rings and cylinder walls; absorbs contaminants; and suspends soot particles that are the residue of combustion. Contaminants can be organic such as fungus and bacteria from the air. Inorganic particles can be ...
When were oil filters invented?
The first oil filters were introduced in the early 1920s (Ernest Sweetland invented it and named if "Purolator," meaning "pure oil later.") Filters of many designs were offered as optional and aftermarket equipment for decades, but they didn't start showing up as standard equipment until the 1950s.
