8 Top GM Oil Filters Cut Open - 2 Clear Winners! Fram, Bosch, Wix, Purolator, AC Delco

There are two factors that determine a good filter, Filtration and Flowability. If the filter is too restictive then the oil will just go through the by-pass. Keeping an eye on the condition of the oil tells you if the filter is doing it´s job.

where the hell did you get the filtration numbers on that purolator? That’s a 25 micron at 99% efficiency.

Sorry your focusing on the wrong things and simply cutting them apart tells you squat without knowing flow rates and backpressure. The very worst thing a oil filter can do is starve the engine from high backpressure that damages both the engine and oil pump. Wix has one of the best reputations out there and looking at the back plate and beefy spring would be my 1st pick hands down.

where was that bosch filter made from??? jsut curious

Put a flashlight in the hole and you'll see light through the bypass plate...

Interesting comparison, in my observations you see far more Fram filtered engines in the junkyards that I frequent than other filters. Just an observation. So I personally do not use Fram for anything

thank you for cutting these things up for us.

i wish you cut open the standard ac delco

I have used NAPA gold, which used to be made by Wix, for years with no problems that could be traced back to a filter issue. I have had two different cars over the years that the oil light would come on at idle in gear that I repaired by merely replacing the orange Fram oil filter with a NAPA gold.

Thanks for the concise video!

weird that you say its a 46micron filter, puralator claims 20microns at 99% for the puralator boss, not sure where the published that its 46 microns

Pffft frams a joke.

How many companies do you think are pressing out these pieces

With the talk about Bypass..Each vehicle engine has a specific Bypass PSI Requirement.
Do all or any of these meet this Bypass Requirement Accurately?

That “clunky functioning” Wix bypass valve is designed to bypass the oil BEFORE it back washes the dirt from the exterior filter media in the bypass mode.

The "seal" doesn't matter. Like you said-- it's a "spring". Which means that it opens and lets oil bypass at the slightest pulse in pressure. They all do this. The filter can't be allowed to clog like a fuel filter, because it would kill your engine. So they ALL easily allow the oil to bypass by design. Especially the "better" filters that have the ability to catch the finer particles. Bypass is happening regularly.

You forgot the K&N FILTER!

I’ll take a bigger micron number and change my synthetic oil at three thousand miles

The Wix bypass is the best design on that table. You don’t understand the design, doesn’t make it “ clunky” lol…

Where is the top tier Amsoil filter? 🇺🇸🇺🇸🇺🇸

I have never seen a drain back oil filter test. So, whose filters drain back valve really works the best?

Purolator Boss for flow and Amsoil for filtration

Filter ! "I don't even know her"

Never witnessed an engine suffering lubrication related damage using mid-level oil filters changed at regular intervals.

The Purolator Boss filter is much better than what you are claiming. Brand Ranks built a serious test rig and its still at the top of leaderboard. Does it hold up to the 99%+ rating? no because thats unrealistic for us normal people and done outside of a lab.

All these WIX fanboys. 😅 I been buying the cheapest filters I can find for yearsssss. Super tech is my go to. No problems whatsoever. If you want to pay $14 for a filter great. Nobody is mad at you 😅

There seems to be zero consideration for the length of the filter medium.

Just skipped over mobil 1

Forget about how they are constructed, how well does each one filter small particles of dirt? Looks can be deceiving.

I use the fram Ultras on my car It's a different model number The filter media looks exactly like the one on the titanium It has that reddish pink color. My models an XG918 it's a cartridge style filter so no can

I have never heard of an application of a filter where it didn't have an internal bypass it's kind of a safety feature built-in to the filter because unfiltered oil is better than nothing at all

I have used Bosch filters only, on my 15 years old VW T5 2.5 TDI. Together with Castrol Edge LL 5w30, changin every 20000 km, it's working good.

That purolator boss is the best filter there. Not sure where the heck you’re getting the filtration numbers from. Its full synthetic media, not to mention the thickest can out of the bunch

Flow rate is also VERY important. The Mobil 1 is 30 micron and has the best flow rate.

Change your oil every 5K with good oil and filter Thats all it takes to keep a engine healthy Don't cheap out and no need for most expensive for every day driver

So I bought a Fram Titanium FS-5 filter specifically because I watched this video. A month and a half ago I did an oil change and installed the brand new Fram filter. I did some work on the engine about a week after the oil change so I just left it alone. I installed a new cam and lifters, timing chain set, valve springs and seals with an Edelbrock TBI intake. Nothing got in the oil and the engine was fairly clean. I started it back up and ran it for a few days but the oil pressure just wasn't right. It normally hits 45~50 PSI cold and it'll drop down to 15 psi when it's hot. I could barely get 30 PSI cold and it would barely keep 10 psi when hot and the check gauges light kept started coming on. I changed the sending unit, I went through the wiring, I even changed the oil again but since the filter was brand new with less than 200 miles on it I didn't change it. Yesterday I pulled the Fram FS5 Titanium off and unfortunately all I had was another Fram extra guard filter to replace it with. I put it on, fired up the engine and it nearly hit 50 psi warming up. Once it warmed up I had a solid 15 psi back.

I'm sorry to say after this experience I will never buy another Fram filter again ever. This could have been the end of a perfectly good running engine because of a freaking $12 garbage filter.

I still have to cut it open because for the life of me I can't understand how this filter blocked in less than 200 miles.

no motorcraft but four frams?

In the next video, I’ll be looking at 10 bottles of wine and tell you which one tastes the best without drinking them.

your opinion on louvers vs. holes vs. that plastic cage thing on the supertech oil filters

How did you find out what micron filter media was inside of them

You’ve clearly never ran wix it’s almost one of the best options, visual inspections don’t do much you have to do an actual oil test

the problem with all these filters is that they have the steel core with the LOUVERS ISTEAD OF HOLES. Some samples of many brands have been found to have many louvers that are not punched out - no openings!

For my group yesterday I took apart a Motorcraft 820S, a Fram XG2, and a Microgard Select 51372. And I was a little surprised at the results. The Motorcraft filter has went down in quality and I'd definitely go with the Microgard Select over either one of them. The XG2 was for the money far superior to the MC 820S EXCEPT the filtered oil returns are a lot smaller.

That's what I liked about the Bosch Premium i bought for my Silverado years and years ago but where I got them stopped selling them so back then I switched to AC Delco filters. I'll order a Bosch Premium for this current ride and see if I like how it performs because there's no way it's getting a Motorcraft put back on if i plan on running it very long. The $4 way it was put together was superior to this $8.44 one.

You can't tell fuck all from this ridiculous comparison. The land of stupid always disappoints.

No Fram fillter will ever be in my car. Ever.

Is it just me , or did he completely skip over the AC delco ??? That’s what I use in my GM vehicles What’s the scoop on those ??

This is nothing, oil filter is for oil, this is similar as you would test cars by the looks.

That wix filter is the ONLY one that bypasses CLEAN oil and not dirty oil. That is why it is complicated.