Micron rating on diesel engine oil filters
 

I was researching some items and discovered that the filters used on old (1960s) Simcas and Citroens were 30% more stringent than the filtration used on 1980s-90s Mercedes diesels!

What are people using now in their diesels, I am curious.

This will also make me review what I'm using in other cars I own.

Does anyone use any oil filters with 5-10 micron filtration ratings?

I'm very curious.

Thanks.

I know mann is about 8 micron. look it up in their website.

I have a Mann filter in the 300D and 240D.
There has been some long oil filter debates the past couple years and probably since the forum started. there is the one where they disected some of the filter and found the sticks, bugs and dirt, and packed with Cotton Gin waste.

I did a search but couldn`t find the one`s I was thinking of, but here is a good one. I`ll look in my notes and see if I can locate them.

http://www.peachparts.com/shopforum/diesel-discussion/252734-oil-filter-company-babble-purolator-617-a.html

Charlie

I've been using knecht filters

MAHLE | Filtration: The heart of filtration

I don't have the specs to hand though. If I manage to reach the back of the garage in the next few days I'll try and find them for you.

(I prefer the knecht filters to the Mann ones as they come with the O rings!)

FYI
 

Those threads where deleted by the OP, years ago. :(

I have a Mann filter in the 300D and 240D.
There has been some long oil filter debates the past couple years and probably since the forum started. there is the one where they disected some of the filter and found the sticks, bugs and dirt, and packed with Cotton Gin waste.

Cheers, I spent 10 years in R and D for a automotive parts supplier for fuel air and oil filtration systems. All testing and product development was done in accordance to SAE J 806 b, and JIS criteria.
On my 300 SDL 1987 I noted a 2 stage filter. pleated paper element, and a cotton element. Most paper elements, as per SAE the standard is 20 microns at 8 psi pressure differential across the media,, at this point the by pass kicks in and by passes the filter. My experience shows that as the filter media becomes more contaminated the ability to filter becomes greater, in regards to filtering smaller particles.. Since the 70's paper media has become known as depth type , thicker cross section,, meaning as the fibers swell with exposure to water it becomes tighter in terms of porosity. The same happens but much more in the cotton element. OEM requirements for our products were higher. The holding capacity, micron rating and ability to withstand pressure differential, {to prevent pleat collapsing and media migration } were more stringent.
We used AC fine dust from SAE spec. and it contained 2 to 200 micron particle size ,Millipore analysis was done and efficiency rate was normally in the 5 micron and 95% capture range but only in the last 50 % of the test. 8 to 10 hr test. contaminate feed rate of 2 grams per hour . So having babbled way too much,,I have done the following on all my vehicles one filter change every 2 oil changes,, and installed a K 55 partial flow filter cotton element that take 5 psi from oil gallery and returns it to sump,, also serves as oil cooler too . Verified that residual partial size is nominal 5 micron, and based on studies by the aviation industry, 5 micron will pass through bearing clearance with out adverse affects, as for rings to cylinder wear it is mostly a issue of end gap ..materials,, and surface finish. Water acids, and chemical formation and sludge are only cured by frequent oil changes. Cheers Dave D. caveat, applies only to autos not fleet / industrial and or stationary applications

I see part of the problem, mercedesshop.com is in the title, not Peachparts.

Here is one I was thinking of.
http://www.peachparts.com/shopforum/diesel-discussion/104768-oil-filters-one-buy.html

Here is another.
http://www.peachparts.com/shopforum/diesel-discussion/200877-oem-oil-filtration-efficiency-50%25%4027-99%25%4050.html

Charlie

B.I.T.O.G.
 

Get ready to abandon your normal lifestyle for a couple of weeks.

- Bob is the Oil Guy

I use a 15 micron as primary filter its 2 qt. size.Then a 5 micron pint size filter,then to stock.both are water traps,and I'm running diesel thru them

Thanks, oldsinner for the info on fuel filters. I'm still working on oil filters, tho' that's a good topic too.

So far, I know that Baldwin filters seem to have a filtration capability of between 18-22 microns on the several size filters for different applications.

I also want to send info to a French company called Purflux, which is famous for heavy-duty auto filters. When I go to France, I buy them for my cars.

But so far, Baldwin is in the lead, with 18-22 microns for MB diesel engines.

Additional data on other brands is appreciated.

Dave,
Thanks for the info, who makes the K-55 filter?

Some past thread:
Has the micron ratings of some makes of the 617.952 Oil Filters
http://www.peachparts.com/shopforum/diesel-discussion/247597-napa-gold-filters-3.html

I solved the Oil Filter Micron issue buy adding ona a By-pass Oil Filter that is 2 Nominal Microns.
Bypass Oil Filter Setup, 617.952 Diesel911
http://www.peachparts.com/shopforum/diesel-discussion/215593-bypass-oil-filter-setup-617-952-a.html?highlight=Bypass+Oil+Filter+Setup%2C+617.952

There is alos a thread somewhere by ForcedInduction where he added on a Amsoil By-pass Oil Filter.

K55 filter
 

Cheer, the K 55 was a Kralinator made,,,but purolater Fram,,should also carry them we sold the kit to retro fix canister braided lines and 1/8 npt fittings.
BTW In the movies Tommy Boy,,, the filter factory in the show was the one I worked at... may also be called K 55a smaller version