I have been researching the Frantz oil filter and have found that the filtering media is a specific kind of toilet paper ( sounds crazy but this filter has been around sense the 1950 ). Filtering the oil thru the Frantz filter captures the particulates down to one micron. I believe the normal oil filter traps particles six microns and above.
My issue is finding the oil sending unit port on my 1987 SDL six cylinder
engine. Frantz recommends placement of a tee fitting out of this port to the filter and then introducing the cleaned oil thru the oil fill cap.
Changing the toilet paper every 2,000 clean the oil to such a degree that oil changes can be determined by an oil test from a lab rather then every 5,000 as recommended by the manufacture.

Those metric T fittings are a bit hard to find in the States, if that's where you are.

But note that you can buy bypass filters that do not use toilet paper, special kind or not. They aren't all that expensive.

Go find a semi tractor and see if it uses toilet paper in its bypass filter.

Yes the filter has been around for a long time, and has never been viable enough for any major engine maker to consider. Hmm, I wonder why.

Anyway, there are many ways to filter your oil, search bypass filter on this forum and you'll see that it's been done successfully. Many of us have had oil analysis for decades to determine the engine's and oil's health, that too is fairly common.

In the end, you probably won't save enough to justify the mess and environmental hazard of a roll of toilet paper with a quart of used engine oil in it every 2000miles, to extend your oil change a couple-few thousand. It cannot filter out the acids, water, and fuel that the combustion process puts in the oil, but pulling a quart out in the roll/filter every time you change a filter will probably help to slowly change the oil / extend the complete oil change. There are proper bypass oil filter systems (used on larger engines usually) that can remove these contaminates though.

It can be done, but I'm not convinced that it is practical.

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Gone to the dark side

- Jeff

Concerning the Full Flow part of the Mercedes Oil Filter it is some where between 22-27 Nominal Microns (as an example a 22 Nominal Micron filter will fileter 50% of the Particles 22 Microns and larger on the first pass of the Oil through the filter).

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84 300D, 82 Volvo 244Gl Diesel

DUH! The manufacturers dont want us to have these filters cuz they WANT the cars to wear out!
As for the oil-soaked roll, you answered your own question as to how best dispose of it with the first three words of the sentence. I use mine for smooooooth wiping!

((disclaimer: I am kidding. On both counts))

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RIP "Betsy" (Oo=*=oO)
'96 E 3 2 0 (W 2 1 0) M 1 0 4 (Totalled)
Spaces in sig so as not to screw up the SEARCH; every time someone searches for that MB they don't want my sig!

2004 Audi A8L
'98 VW Passat 1.8T 5M
'87 Alfa Romeo Milano 2.5L 5M
'67 Impala convertible, 327cid

It's a good thing that I had already finished my coffee.

At one time besides Frantz (still in business under another name) there was at lest 2 other American Companies; Oil Guard and Stilko that used Toilet Paper for the Filter Element.
There is also a few Euro companies and an Aussie company that sell similar items but the Housing are different.

I have read no comments that claimed that the Toilet Paper did not filter as advertised.
The complaints regarded the messy changing and I believe I read an article where a person said His Frantz would plug up every 3,000 miles (that indicates it was working).
(You know the Filter is plugged up when the Oil Return Line no longer gets hot.)

Also if you use regular Toilet Paper (single ply Scott was recommended by some) you had to fit it to the Housing by unrolling some of the Paper till the OD was small enough for the roll to squeeze into the housing.
So the Frantz offers more work but less cost to change Filters.

Toilet Paper Elements to not cost much but even a used Frantz on eBay can cost some.

You can buy a generic Filter Base for an Amsoil bypass Oil Filter for $20 or Less on eBay but the Amsoil filter was around $30 each the last time I looked.

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84 300D, 82 Volvo 244Gl Diesel

Why Amsoil? Can't you get one at NAPA?

The Amsoil by-pass filter, will filter particles less than one micron or larger..

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

The media in the Amsoil bypass filter is advertised to absorb water also. Never used one but have read up on them and I use their oils, other filters and lubes.

__________________
1983 M-B 240D-Gone too.
1976 M-B 300D-Departed.

"Good" is the worst enemy of "Great".

Several years ago when I looked into bypass oil Filters I found that Amsoil and another company Harvard are the only ones that sell spin-on Bypass Oil Filters.
To the best of my knowlege NAPA does not sell them.
The Harvard company never answered my Email and I got that Brand Name from an old thread from one of our Members so for me it is a dead end.
There is at least 5 companies making and selling their versions.
Puradyn (expensive; cartridge type Element that has replacement addatives inside the filter if you want them)

Oil Guard (Not cheap either; use cartridges that are String-wound filters and has several sizes of Filters).
RACOR appears to be putting their name on the Oil Guard Filters and selling them.

Gulf Coast (uses cartride type/rolls of Paper as Filter Elemenmts has sizes for the big rigs).

NTZ bypass oil filter (another expensive one).

Amsoil (their BP spin-on Filters).

With the exception of Amsoil most of the above companies seem to have most of their business from industrial applications and trucking.

There are a buch of Hydraulic Filter available but they Elements are also expensive.
Back to the Amsoil. I mentioned it because it is the easiest and cheapest to install.

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84 300D, 82 Volvo 244Gl Diesel

I am not sure that is true.
I wrote to one of the sellers of Amsoil BP (bypass) filters and he Emailed me that they were 3 absolute micron Filters (look up the difference between Nominal Micron and Absolute Micron).

Saw this when I did an internet search:
AMSOIL Bypass Oil Filters
2-micron rated filtration systems Free catalog. Wholesale programs.
Sponsored By www.thebestoil.com

Notice the 2-micron rated. Also if you read the Amsoil Ads they are not the same as they were several years ago concerning the Mircon filtration level.
Part of the reason is that the ISO testing for Filters has changed.
My CAT 1R-0750 Fuel Filter was previously rated at a 2 absolute Micron Filter. With the new testing they are saying not.

It used to be Filter copanies could claim what the wanted.

Here is an example. If I throw a hand full of BBs at a Chain Link Fence some of those BBs will hit the Fence Links and not pass through to the other side ofthe Fence.
If I was a Filter Company I used to be able to say my Filter will filter out BB sized particles because a few of the BBs did not make it through. Even though most of the BBs I through at the Fence passed through it.

Now with the new testing that is changing.

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84 300D, 82 Volvo 244Gl Diesel

I was always under the impression they filter 2 micron absolute.

The info I posted is out of their wholesale price list at the top of the page the by-pass filters are listed on.

I use the EaBP-100 and the EAO-26 full flow filters. bought the Amsoil mounting block off e-bay a few years ago. along with the stock MB filter and these 2 filters, the engine holds 11 qts of oil.
Been using this for the past 40K miles.

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

I am not in a position to dispute too much as I only have a few facts here and there and most of my info is at least 2 years old.

What is clear is that if you put any of the various Bypass Filters on your Vehicle your Oil is going to get filtered better than the stock Oil Filter and that is a good deal for your Engine.

__________________
84 300D, 82 Volvo 244Gl Diesel

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works