I beleive that we need to adapt a "T" to the oil sending unit to get a proper high pressure oil feed.

With regard to the drain, this is not as easy. Frantz recommends using a self tapping screw that they provide, with a hole down the center, and install it in the oil pan. I'm not real keen on this if it has to be done on the vehicle.
I'd like to find a return oil line, somewhere lower than fenderwell area where the filter is to be mounted, and tee into that.

Take a look at it and see what you think.

I am trying to figure out if the toilet paper is on a roll or is it used toilet paper.... :confused:

Frantz used to have little diagrams showing where to connect all the lines for many different cars. Maybe they have some for MB.

DOES ANYONE REALIZE OIL DOESNT LAST THAT LONG! EVEN IF YOU ADD THE "1 QUART TO REPLENISH ADDITIVES" this type of filter was used in really old cars. before technology! now they have the oil filters we use now. if this was as good as you all clim they would have never stopped using it. remember the old oil bath filters. they worked good. but now we have k&n and mann and all of those that work even better. OR AM I JUST A DUMB TEENAGER THAT DOESNT KNOW ANYTHING?

I'd take toilet paper over a Fram filter :D

I've got a Gulf Coast Filters oil bypass filter (similar to the frantz) on my 617-912 (non turbo 5 cylinder) and after 3400 miles I think it's working fine. These type of filters are used frequently on crew boats in the oil fields without problems, and over the road truckers use them also. TP of suitable size and content can be found easily. Get the "green" TP; ie non bleached/without perfumes. It does not break down and enter the oil system. These filters are not used widely for a good reason- oil company greed. Where would they be if you didn't have to change your oil so often? Without a huge source of revenue, that's where.
Do a google on bypas oil filters
or check
www.gulfcoastfilters.com

William :D

kmaysob you are missing one part of this, oil does not wear out. You can run the same oil in an engine forever as long as the additives are good and it stays clean. The millitary has been doing this for many years. Go take a look at a WW2 Battleship I bet the original oil is still in all of the equipment and is probably still fine.

Paper canister filters are not that great, the reason auto makers use them is they are cheap. Toilet paper is a very good filtering material, and yes it is on a roll. Frantz type filters have probably been around for the better part of the 20th century.

I would like to keep my oil cleaner because 603's like clean oil, also $50 oil changes every 3k get a little costly. However a $50 oil change every 10k-20k miles is down right cheap.

if you want to treat your car like a ww2 ship i say go for it. the most i would let my oil go for is 5k with one of those filters. i figure 50 dollars every 3k isnt that bad considering i could need a new engine if i dont change it frequent enough. or have to replace the timing chain. it will be evident after a few years that you needed to change it.

The gentleman useing this system on his 606 is seeing slightly less than 1 degree of chain stretch every 100k miles.

Do some research- just like anyone, and you'll stop doubting yourself. There is no doubt that regular oil changes with a stock system are what's needed, and those resistant to change will continue to reject anything that contradicts that. Those with an open mind will not out of hand reject new ideas, regardless of how "successful" the past methods have been. Bypass filtering of oil seems to be a "new" idea because people have not heard of it- and they are suspect of it. Can't blame them, but don't be critical without being armed with facts and knowledge. ;)

BTW what's a "300DT"? never heard of/seen that on back of a W123 or in OE mercedes manuals.

i dont doubt myself. as soon as people found out im not in my 20's and 30's they started acting like im a dumb ass and ignored my replies. so i have to type in caps to get peoples attention. that type of filter is nothing new. it was one of the first oil filters around. i showed my science teacher this post today and she agrees with me. as does my dad and everyone else i have told this to. i try alot of things like this too but i can tell you its not as good as you think. he may say that he has it tested and it comes back clean and still good but i doubt it. goodday

Yesterday I had E-mailed Amsoil Oil, a Company that is very well trusted and respected for the high quality Oil that they sell.

Basically, I mentioned this discussion group and had asked their opinion of using a FRANTZ TP filter in a Diesel engine.

In view of Amsoil's answer, I stand partially corrected on my earlier post in which I stated that the additives in the oil are larger than a Micron, and hence will get trapped by the TP Filter.

Below is Amsoil self-explanatory reply to me:

==============================================

Thank you for contacting AMSOIL with your concerns.

In response to your inquiry, the oil additives will not be filtered out by a sub-micron filter.* The reason why is that they are bonded on a molecular level.* There are “solid” additives, however, that can be filtered out using a sub-micron filter.* These additives may be molybdenum, graphite, Teflon, or aftermarket polymer additives.* The AMSOIL Synthetic Motor Oils do not contain any of these solid additives, therefore using a sub-micron filter will not be a problem with any of our motor oils.* If anything, it will be a benefit to insure the longevity of the engine and the motor oil used.

There is one caution about using a toilet paper or paper towel media.* They are highly efficient at trapping moisture which will soften and swell the paper media.* This can eventually lead to channeling of unfiltered oil through the media and back into the engine crankcase.

Thank you again for the opportunity to respond to your concerns.* As always, please feel free to contact us again if we can be of further assistance.

Sincerely,

Darryn Wallace
Technical Service Department

DT- the oil channels and goes thru the filter- not the TP.
Did you make up the DT? or just think that people don't know that domestic W123's were turbo'd in '82 and the wagons in '81?
IMHO using the unofficial "DT" means you believe others don't know the above; you don't know the above; or have decided to add your own non OE monikers to the 300, which others do also but then ultimately confuses people- what's a TD? Turbo Diesel? or Touring Diesel? or wagon How about a 240- is it called a 240DNA? or a W116/126- a 300SDT?
Getting back to the subject- if there is relevent scientific evidence that shows filtering oil down to the 2 micron level hurts engines I'd love for someone to post that finding. To the contrary, there is ample evidence that further filtering of lubricating oil (past the normal stock filtering cabability of 25-30 microns) is beneficial to all marine, off highway and automotive engines.

Oh boy, another oil related thread.... Bottom line is bypass filters have been around for a long time. They work very well and you will find them on large industrial engines where changing the oil can be very expensive. The reason bypass filters haven't caught on in auto use is generally its not the engine that wears out in most cars. Its everything else. Especially so in MB's MB diesels have proven they can go 300K, 400K, 500K etc. with regular oil changes using fairly cheap dino oil. Since most of the population only keeps a car for 100-150K, who needs a bypass filter? If you feel you need one, by all means, go ahead. It has already been shown by other board members that synthetics can last up to 10K, through oil analysis. Pick your poison. RT

That sounds like a very informed answer. Personally, assuming this response is mostly correct, I would not be afraid to run this filter. Water is a non-issue inside the engine - any water will evaporate quickly once the engine is up to temperature. Presumably anyone would change the media in this filter in plenty of time to avoid any possible water damage.