LAB-428-Throwaway Oil Filters vs. Reusable Serviceable Oil Filters for Harley-Davidson-Oil Filtration & Micron Talk
Law Abiding Biker | Street Biker Motorcycle Podcast
Law Abiding Biker | Street Biker Motorcycle Podcast Apr 29, 2026
LAB-428-Throwaway Oil Filters vs. Reusable Serviceable Oil Filters for Harley-Davidson-Oil Filtration & Micron Talk

LAB-428-Throwaway Oil Filters vs. Reusable Serviceable Oil Filters for Harley-Davidson-Oil Filtration & Micron Talk

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LAB-428-Throwaway Oil Filters vs. Reusable Serviceable Oil Filters for Harley-Davidson-Oil Filtration & Micron Talk
Part

oil filter

An oil filter is like a screen for your engine oil. It catches dirt and debris so the oil can keep protecting the engine. This episode is comparing different kinds of oil filters and how they relate to warranty.

2025 CVO
Car

2025 CVO

On Harley-Davidson, โ€œCVOโ€ usually means a more premium, custom version of a bike. The question here is whether using a specific aftermarket oil filter could affect warranty coverage on a 2025 CVO.

Concept

warranty coverage

Warranty coverage means the company will pay for certain repairs if something goes wrong. If you use an aftermarket part, the question is whether the warranty will still cover problems.

Brand

Figurati

Figurati is the name of the oil filter brand being discussed. The hosts are basically asking: if you use that brandโ€™s filter, will your bikeโ€™s warranty still be valid?

Part

axle nut covers

Axle nut covers are add-on pieces that fit over the axle nut area. They can make the bike look nicer and help protect the hardware from dirt and moisture.

Term

magnetic filters

Magnetic oil filters use magnets to attract and hold ferrous metal particles from the oil, supplementing the filterโ€™s normal filtration media. The idea is to reduce wear debris circulating in the engine, which is especially relevant for riders who want to manage oil cleanliness between service intervals.

Part

seat bolts

Seat bolts are the screws/bolts that hold the motorcycle seat in place. Aftermarket versions are usually about making the bike look nicer or keeping the hardware in better shape.

Term

magnetic dipsticks

Magnetic dipsticks use a magnet on the stick to attract ferrous wear particles from the oil, giving a visual indication of metal debris. Riders use them as an extra โ€œdata pointโ€ for monitoring engine wear trends alongside oil condition and service intervals.

24 street glide
Car

24 street glide

Theyโ€™re talking about a Harley-Davidson Street Glide from 2024. Itโ€™s a touring-style motorcycle, and the โ€œaxle nut coversโ€ they mention are mainly for looks and finishing the bikeโ€™s hardware.

Car

HJC ARFA 91

This is a specific motorcycle helmet model from HJC. The host says itโ€™s a cheaper option compared to a more expensive Shoei helmet, and they think itโ€™s still a great buy for the money.

Car

Shoei Neotech 3

This is a higher-end motorcycle helmet from Shoei. The host uses it as the โ€œpremiumโ€ reference point when talking about whether a cheaper helmet is still worth it.

Brand

Zero 3D

Zero 3D is a company that makes aftermarket accessories for motorcycles. In this segment, theyโ€™re mainly talking about products like lighting and comfort upgrades that fit specific bike models.

Company

Zero Goldstrike

Theyโ€™re talking about a brand that makes LED lights for motorcycles. The point is that these lights are designed to be straightforward to install and compatible with certain setups.

Term

plug and play

โ€œPlug and playโ€ means you can install it by connecting it like a simple plug-in. Itโ€™s usually meant to avoid cutting or complicated wiring work.

Company

hog works

Theyโ€™re talking about Hog Works, a company that makes motorcycle parts. The hosts like it because the parts fit well and are finished nicely, and they say customer support is responsive.

Car

Harleys

They mean Harley-Davidson motorcycles. The hosts are saying theyโ€™ve installed these parts on their own Harleys and trust how they work.

Term

lubrication

Lubrication is how oil gets to the engine parts so they donโ€™t grind against each other. Good lubrication also helps keep the engine cooler and cleaner.

Brand

Harley Davidson

Theyโ€™re talking about oil filters for Harley-Davidson bikes. The right filter helps keep the engine oil cleaner, which helps protect the engine.

Term

Micron talk

Microns are a way to measure how fine the filter is. The smaller the number, the better it usually is at catching tiny particlesโ€”though the filter still has to let oil flow properly.

Term

used oil analysis

Used oil analysis is testing a sample of oil after itโ€™s been in the engine to check wear and contamination. It can reveal issues like excessive metal particles, fuel dilution, or coolant leaks before they become failures.

Term

synthetic oils

Synthetic oil is a special type of engine oil thatโ€™s engineered to last longer and protect better. It usually works well in both hot and cold weather.

2024 Harley Davidson touring
Car

2024 Harley Davidson touring

Harley-Davidson Touring bikes are made for long rides and usually have room for luggage. Taking off the fuel tank is sometimes necessary to do certain repairs or upgrades.

Term

strapless transport system

A strapless transport system is a way to hold your motorcycle in place without using tie-down straps. Itโ€™s meant to make loading and securing the bike faster and more consistent.

Company

RISK racing

RISK racing makes gear for transporting motorcycles. The key idea here is a system that helps you secure the bike without using straps.

Concept

oil filtration

Oil filtration is how your engine oil gets cleaned as it circulates. Cleaner oil helps protect the engine from wear caused by dirt and tiny metal particles.

Term

OEM filters

OEM filters are the โ€œfactoryโ€ style filters made for your bike by the original manufacturer. The episode compares them to the reusable aftermarket option.

Term

wire mesh filters

Wire mesh filters catch dirt using a metal screen. Because the screen can often be cleaned, theyโ€™re sometimes used as reusable filters.

Harley-Davidson
Car

Harley-Davidson

They bring up Harley-Davidson because the conversation is about oil filters for Harley motorcycles. The main idea is whether you should use a disposable filter or a reusable one you service.

Term

magnetic reusable

Theyโ€™re talking about a reusable filter that uses magnets to help trap metal particles in the oil. That can help keep the oil cleaner and protect the engine components.

Term

white papers

โ€œWhite papersโ€ are referenced as technical documents the hosts read to evaluate the filter technology. In this context, theyโ€™re used to support claims about performance and engineering credibility rather than relying only on marketing.

Term

nominal vs absolute

Nominal and absolute are two different ways to describe how good a filter is. Nominal usually means โ€œpretty good at catching,โ€ while absolute is more like a stricter guarantee about the biggest particles it will stop.

Term

synthetic media

Synthetic media is the material inside the oil filter that actually traps dirt. Some synthetic materials can catch smaller particles more effectively than paper, but it depends on the filter design.

Term

paper media

Paper media is the older, common material inside many oil filters. Itโ€™s popular because itโ€™s inexpensive, but how well it filters depends on how the filter is built.

Term

magnets (in serviceable filters)

Magnets in a serviceable oil filter are used to attract and hold ferrous (iron-containing) particles from the oil. This can complement the filter media by reducing the amount of metal debris circulating, though it doesnโ€™t replace full filtration of non-magnetic particles.

Term

throwaway filters

A throwaway oil filter is the kind you replace when itโ€™s time for an oil change. You donโ€™t clean it and reuse itโ€”you just swap in a new one.

Term

magnets inside the filter medium

Instead of putting a magnet on the outside, some filters put the magnet where the oil actually flows through the filtering material. That way, the magnet has a better chance to catch metal debris.

Company

Canadian company

They mention a Canadian company that puts magnets directly in the oil flow path. The idea is that the oil passes by the magnets more directly, so more metal debris gets pulled out.

Company

Amzol

โ€œAmzolโ€ is referenced as the speakerโ€™s prior filter brand choice for their bike, and as a baseline for comparing filter costs versus the serviceable โ€œFiguratiโ€ approach. The segment uses a rough cost equivalence (about ten Amzol filters equals one serviceable filter) to argue for long-term value.

Term

absolute versus nominal

Filters can be rated in different ways. โ€œAbsoluteโ€ usually means the filter is tested to catch particles very consistently at that size, while โ€œnominalโ€ is more of an estimate. Thatโ€™s why two filters with the same micron number might not filter the same way.

Term

higher flow rate

Flow rate means how easily oil moves through the filter. If oil flows more easily, the engine can get lubrication faster. But the filter still has to catch dirt, so the design has to balance both.

Term

cooling fins

Cooling fins are extra ridges on the outside of the filter that help it shed heat. If the oil stays cooler, it can work better and last longer. Itโ€™s like adding a radiator to the filter area.

Term

micron rating

Micron rating is a way to describe how fine a filter isโ€”how small the dirt particles it can catch are. The episodeโ€™s big lesson is that the same micron number can mean different things depending on how itโ€™s measured.

Part

stainless steel mesh filter screen

A stainless steel mesh filter screen is the reusable filter element described for the Figurati filter. The hosts rate the mesh by micron size and discuss how that rating (absolute vs nominal) affects real-world filtration expectations.

Company

PC racing flow

PC racing flow is mentioned as a source for a filterโ€™s micron rating. The key point is that โ€œnominalโ€ and โ€œabsoluteโ€ ratings arenโ€™t the same, so the numbers can be misleading if you donโ€™t know which one they mean.

Term

OEM 35 micron absolute

Theyโ€™re talking about what the original equipment manufacturer (OEM) claims their filter can catch. The hosts suggest the OEM numbers arenโ€™t always clear or consistent, which matters when youโ€™re comparing filter performance.

Term

throwaways

โ€œThrowawayโ€ refers to conventional disposable oil filters that are replaced rather than cleaned and reused. The episode contrasts these with reusable/serviceable filters and argues that filtration performance can be better than people assume based on micron marketing alone.

Term

neodymium magnets

Neodymium magnets are rare-earth magnets used to attract ferrous metal particles in the oil. The hosts say Figurati uses multiple magnets (five) and specify the magnet type as neodymium/rare earth, tying it to how the filter may reduce metal contamination.

Term

five magnets

The episode claims the Figurati reusable filter uses five magnets to help capture ferrous debris. This is presented as part of the overall filtration strategy alongside the mesh screen and micron rating discussion.

Term

silicates / silica (silicate)

Silica/silicates are basically dirt particles that can end up in your oil. If your oil analysis shows high silica, it often points to dirt getting in through the air system (like an air leak or not-so-great filtration), not necessarily the engine wearing out.

Term

ferrous material (iron)

Ferrous material is basically iron wear debris. If your oil test shows more iron than usual, it usually means the engine is wearing more internally, not just picking up dirt from outside.

Company

Blackstone

Blackstone is a company that tests samples of your used oil. They can help you understand whether your engine is mostly getting dirt in from the outside or whether itโ€™s wearing internally.

Term

oil analysis (silica and iron levels)

Oil analysis checks whatโ€™s in your oil after youโ€™ve driven. Iron can point to wear, and silica can point to dirt/contaminationโ€”stable numbers usually mean things are staying under control.

Term

20 micron absolute

โ€œAbsoluteโ€ is a stricter kind of filter rating. If a filter says โ€œ20 micron absolute,โ€ itโ€™s trying to tell you it can trap particles that are about 20 microns (or close to that) very reliably.

Brand

Amsoil

Amsoil is a company that sells motor oil and oil filters. Here theyโ€™re being used as an example because they claim a specific filter rating (like 20 microns).

Company

MAHLE

MAHLE is a big company that makes oil filters for a lot of different brands. The point here is that many โ€œdifferentโ€ filters may come from the same few manufacturers.

Term

bearings

Bearings are parts inside the engine that need clean oil to stay smooth. If dirty particles get through, they can grind and wear the bearings faster.

Term

scuff the cylinders

โ€œScuffingโ€ refers to damage on cylinder walls caused by abrasive contact or insufficient lubrication. The segment uses it as an example of why controlling particulate contamination in oil matters for engine longevity.

Term

nominal rating

โ€œNominalโ€ is basically a โ€œweโ€™re aiming to catch particles around this sizeโ€ statement. It doesnโ€™t promise exactly how often it will catch them, so real-world performance can be less certain.

Concept

filter efficiency vs. capture guarantee

This segment explains the difference between โ€œefficiencyโ€ (how much contamination a filter removes, often expressed as a percentage) and a โ€œcapture guaranteeโ€ (a stricter claim that nearly all particles at a size are stopped). Understanding this distinction helps listeners interpret filter marketing and choose between disposable vs. reusable filtration strategies.

Term

absolute rating

โ€œAbsoluteโ€ means the filter is tested to block almost all particles of a certain size and bigger. Itโ€™s usually a more strict, more trustworthy claim than just saying it filters well.

Concept

absolute efficiency

Filter efficiency is how well it actually stops dirt. If a filter is too restrictive, it can clog and then the system may route oil around it. So the best โ€œefficiencyโ€ on paper might not be the best in real life.

Term

bypass

Oil filters can get clogged. When that happens, some systems open a bypass so oil can still flow to the engine. The downside is that oil going through bypass isnโ€™t being cleaned by the filter.

Term

wear metals

Wear metals are tiny bits of metal that show up in oil when engine parts rub together. If those numbers keep increasing, it can mean something is wearing out faster than it should.

2018 Yukon
Car

2018 Yukon

They use their 2018 GMC Yukon as an example of oil test results. In this case, the oilโ€™s protective ability started to drop around 9,500 miles, which can mean the oil is getting too acidic.

Term

acidic oil

Oil can slowly turn more acidic as it ages. When that happens, it can stop protecting the engine as well and can lead to more wear over time.

Term

total base number

Total Base Number (TBN) is an oil-analysis metric that estimates how much alkaline additive reserve the oil has to neutralize acids formed during combustion. A falling TBN suggests the oilโ€™s protective capacity is being used up, often indicating the oil is aging faster than expected or the engine is producing more acids.

Term

microns

Microns are just a way to describe how small the dirt particles are. Oil filters are rated by how small of particles they can catchโ€”smaller number usually means it catches finer junk, but it may clog sooner.

Concept

industrial filtration vs vehicle filtration

Big industrial machines sometimes need very specialized filtration because the environment is harsher. Regular vehicles donโ€™t usually benefit from the same level of complexity because it can be overkill and harder to maintain.

Term

nominal versus absolute

Not all โ€œmicron ratingsโ€ are the same. Nominal is more of a โ€œsome of itโ€ rating, while absolute is closer to โ€œthis size should be capturedโ€ under test rules.

Term

oil sump

The oil sump is the lowest part of the engine where oil collects before being pumped through the lubrication system. The speaker mentions non-ferrous particles being present in the oil sump and then being captured by the filterโ€™s magnetic/particle-charging process. Knowing what the sump is helps listeners understand where contamination accumulates.

Term

micron numbers

Microns are a way of saying โ€œhow small of dirt a filter can catch.โ€ But the number alone doesnโ€™t tell the whole storyโ€”different tests and rating styles can make the same number mean different things.

Term

nominal or absolute

โ€œNominalโ€ and โ€œabsoluteโ€ are two common ways filters are rated. Absolute ratings are typically stricter (intended to capture particles down to a stated size under defined conditions), while nominal ratings are more approximate and can vary with test setup and flow.

Term

25 micron absolute stainless steel mesh filter

Theyโ€™re talking about a stainless steel mesh filter thatโ€™s rated to capture particles around 25 microns, using an โ€œabsoluteโ€ style rating. The important part is that this rating is about the filter media, not any extra features like magnets.

Term

25 micron absolute stainless steel mesh screen

Microns are tiny sizesโ€”25 microns is the filterโ€™s target for what it can catch. โ€œAbsoluteโ€ usually means itโ€™s meant to reliably trap particles around that size, not just โ€œmaybeโ€ catch them. The stainless mesh is the physical screen doing the filtering.

Company

figure Audi says

They mention Audi as a reference point for what micron filtration might mean in practice. The point is to estimate how fine the filtration could be if the system is built to target around 10 microns.

Term

10 micron absolute mesh filter

10 microns is smaller than 25 microns, so itโ€™s for catching finer junk in the oil. If that finer filter gets clogged, the system may route oil around it so the engine still gets lubrication.

Company

PC flow filter

The segment contrasts a โ€œserviceable bypassโ€ design with a PC Flow filter that has a bypass system but is not designed to be taken apart for service. This matters because serviceability affects how thoroughly owners can clean or maintain internal filter components over time.

Term

15 psi

Theyโ€™re saying the bypass is set to open around a certain oil pressure. If the filter is restricted and pressure rises, the filter will start letting oil bypass so the engine still gets lubrication.

Term

OEM paper filter

An OEM paper filter is the factory oil filter thatโ€™s usually meant to be replaced. Itโ€™s not normally designed to be taken apart and inspected.

Concept

early warning sign before catastrophic failure

The point is that metal and debris in the oil can hint at problems early. If you notice it sooner, you can investigate before the engine damage becomes serious.

Concept

metal shavings and "chunks" as a wear indicator

Small bits of metal can sometimes show up in oil, especially early. But if you see big chunks or shards, thatโ€™s a warning sign that something inside the engine may be failing or wearing abnormally.

Term

magnet on the drain plug

Some drain plugs have a magnet on them. When you drain the oil, the magnet grabs metal particles so you can tell if the engine is wearing more than it should.

Company

Mel's mesh filtration

This sounds like a special oil filter design that uses mesh to trap debris. Theyโ€™re saying itโ€™s better at catching contaminants and easier to check and maintain than the factory filter.

Term

OEM stock filter

โ€œOEMโ€ refers to the original equipment manufacturerโ€™s partsโ€”here, the stock oil filter. The hosts claim the aftermarket filtration package adds features like magnetic capture and inspectability that the OEM stock filter doesnโ€™t provide.

Term

billet housing

A billet housing is a metal part made by cutting it from a solid chunk of metal. Itโ€™s often used when people want a strong part that also looks high-end.

Company

Figure outie

The hosts are talking about a specific oil-filter brand (โ€œFigure outieโ€). They like it because itโ€™s designed to be cleaned and serviced, not just thrown away after an oil change, and it also looks good on the bike.

Term

35 absolute

โ€œ35 absoluteโ€ is a stronger, more certain filtration claim than โ€œnominal.โ€ It suggests the filter is designed to reliably trap particles around that size, not just โ€œaboutโ€ that size.

Term

10 micron nominal

โ€œ10 micron nominalโ€ is basically how fine the filter is. It means itโ€™s meant to catch particles around 10 microns, but โ€œnominalโ€ usually means itโ€™s an estimate of performance rather than an absolute promise.

Term

microfiber cloth

Using a microfiber cloth during filter cleaning helps avoid scratching or leaving lint that could contaminate the oil system. Itโ€™s part of the recommended process for cleaning reusable filter elements.

Term

Allen head key

An Allen head key (hex key) is the tool used to unscrew the filterโ€™s bypass system for disassembly. This is relevant because it indicates the design is intended for quick service without special tools.

Term

oil change

An oil change is when you drain old engine oil and put in fresh oil. The hosts are saying you can also service or swap the filter element when you do that.

Term

internal filter

The โ€œinternal filterโ€ is the replaceable filtration element housed inside the outer filter housing. This design supports a reusable housing approachโ€”clean the housing/bypass, then swap the internal element as needed.

Part

internal mesh stainless steel screen

That stainless mesh screen is the part that actually traps dirt in the oil. Because itโ€™s mesh, you can clean it and put it back instead of throwing it away.

Term

parts cleaner

Parts cleaner is a solvent used to remove oil and grime from components before reassembly. The key point here is drying timeโ€”residual solvent or water can contaminate the engine or cause corrosion.

Term

O-rings

O-rings are the rubber seals that stop oil from leaking around the filter housing. If they get worn or damaged, oil can leak out.

Term

oil flows

โ€œOil flowโ€ refers to how quickly and easily oil moves through the engine and filtration system. In performance and racing contexts, higher flow can help maintain oil pressure and reduce starvation during hard use. However, flow and filtration have to be balanced so the engine still gets clean oil.

Term

ferrous metal debris

Ferrous metal debris means iron-containing particles, which are attracted to magnets. In engines, these particles can come from normal wear (like clutch or gear wear) or from component damage. Capturing them helps reduce abrasive wear as oil circulates.

Term

magnets are supplemental filtration

Some filters use magnets to grab metal bits from the oil. It works alongside the filter screen, which traps other kinds of dirt.

Concept

inspectability

Inspectability is how easy it is to visually check a filterโ€™s condition (or the contaminants it captures) without specialized tools. Better inspectability can help riders understand whether their filtration is doing its job.

Concept

oil sample analysis

Oil analysis means sending a small amount of oil to a lab. They check for metal wear and contamination so you can see whatโ€™s really happening inside your engine.

Concept

oil sample companies have millions of samples

The more oil samples a testing company has collected over time, the better they can tell whatโ€™s โ€œnormalโ€ for your kind of bike. That helps the report be more useful than a generic guess.

Company

Dynacycle

Dynacycle is referenced as part of a real-world testing discussion for motorcycle oils. The speaker is comparing oil brands/products and tying that back to used-oil analysis results, implying that different oils can behave differently under real riding conditions.

Concept

Magnus and Moss warranty act

This is a law that prevents car makers from blocking your warranty just because you used non-brand parts. If they try to require their specific filters or services, they canโ€™t just deny the warranty without following the rules.

Company

AutoZone

AutoZone is a store where you can buy car and motorcycle parts. They mention it to show that you can buy a different filter brand than the one the manufacturer sells.

Company

Fram

FRAM is a filter brand you can buy at parts stores. The episode uses it as an example of aftermarket filters that shouldnโ€™t automatically void warranty coverage.

Concept

burden of proof

If a shop says your aftermarket part caused the breakdown, they have to prove it. They canโ€™t just guess or assumeโ€”there has to be real evidence connecting the part to the failure.

Concept

evidence of causation for warranty denial

To deny a warranty claim, the shop needs more than โ€œit was probably your part.โ€ They need a clear reason and proof that the part directly caused the failure.

Term

aftermarket air filter

An air filter helps keep dirt out of the engine. Theyโ€™re saying that if you use a bad/incorrect air filter setup, it could plausibly cause problemsโ€”unlike normal oil-filter use.

Term

flow testing

Flow testing checks how easily oil can move through the filter. Itโ€™s basically a way to see if the filter was working the way it should.

Concept

Magnuson-Moss Warranty Act

This is a U.S. law that protects you when a car maker tries to deny warranty claims. They generally have to prove the aftermarket part actually caused the failure.

Brand

BMW

BMW is mentioned as an example in warranty arguments. The takeaway is that the company canโ€™t just deny coverage automaticallyโ€”they may need proof the aftermarket part caused the issue.

Term

aftermarket parts

Aftermarket parts are components made by companies other than the vehicleโ€™s original manufacturer. In warranty disputes, the key issue is whether the manufacturer can prove the aftermarket part caused the specific failure being claimed.

Company

FTC

The FTC is a U.S. government agency that enforces consumer protection rules. Here itโ€™s being used as an authority for how warranty disputes should be handled.

Term

oil spec

An oil spec is basically a checklist of what the oil is supposed to do. If the bottle clearly lists the spec it meets, itโ€™s easier to show itโ€™s the right type of oil for your engine. If it doesnโ€™t list anything, itโ€™s riskier.

Concept

ASTM standard

ASTM is an organization that publishes standardized test methods and performance requirements used across industries, including lubricants. The hosts mention multiple standards (national and international) that govern what counts as acceptable oil/filter performance. Their point is that reputable products follow recognized standards, which helps support warranty and performance claims.

Term

quickie lube

โ€œQuickie lubeโ€ is a quick oil-change place. The hosts are saying these shops often use non-OEM filters, and that doesnโ€™t automatically ruin your warranty. Their point is that using a different filter brand is usually normal.

Concept

warranty implications of aftermarket vs. OEM parts

People worry that using the โ€œwrongโ€ parts could cause warranty problems. The hosts are saying you donโ€™t need to panic, but you should understand what youโ€™re doing and keep up with proper maintenance.

Term

aftermarket catch up

โ€œAftermarket catch upโ€ refers to the time lag between when a manufacturer changes or locks down a component and when third-party companies produce comparable alternatives. The hosts use it to explain why OEM parts can stay expensive for a while before cheaper options appear.

Term

magneson

Theyโ€™re using a magnet to pull small internal pieces out of the filter. Itโ€™s a trick to make the job easier and keep parts from getting lost.

Term

reusable filter

A reusable oil filter is one you can take apart and clean instead of throwing away. The goal is to get the inside really clean so it can filter oil properly again.

Term

90 stream

Theyโ€™re making a little extension so the spray comes out at a 90-degree angle. That helps you clean the inside of the filter without struggling to aim the can.

Toyota A90
Car

Toyota A90

The Toyota Supra is a sports car made by Toyota. Itโ€™s designed to be fast and fun to drive, and many owners like to modify them for better performance. In a conversation, it might be brought up because people often talk about ways to upgrade or customize it.

Term

mesh (filter mesh)

โ€œMeshโ€ is the material inside the filter that physically blocks particles as oil goes through. If itโ€™s too restrictive or gets dirty, it can clog and force oil to go around the filter.

Term

throwaway paper mesh filters

These are the common disposable oil filters you replace when they get dirty. The hosts are saying they may still have a bypass, but you canโ€™t service them to restore filtration the way you might with a rebuildable design.

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