Did a search and only came up with one post dated back in 2001 with only three responses, nothing direct.
Sorry, upon further searching I`ve found quite a bit...but the question still stands...

Has anyone installed an oil bypass filter in their diesel MB? I have installed one in each of our TDIs and I`m looking to see if there are any MB`s with a similar set up. I guess anything to keep the oil clean and cool is in our new 300TD`s best interest. Wanna keep it long enough so they can cart my remains away in it some day. :p

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300TD W124, Two VW TDI Passat Wagons,Cummins Ram 250, Kubota Tractor
23 cylinders sipping the sweet sauce of the soy bean

Since our oil filters are 2 stage anyway, there is no need for a seperate bypass filter.

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83 M-B 300D- daily driver
83 240D gray market
2002 VW Jetta TDI- beater

Thanks for your input Diesel 924. Would this be the type of filter for our particular 300TD? Would you happen to know the micron size that these filters will deal with?

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300TD W124, Two VW TDI Passat Wagons,Cummins Ram 250, Kubota Tractor
23 cylinders sipping the sweet sauce of the soy bean

RC,

Mickey put one his SDL by tapping into the oil filter housing and the valve cover. Its my opinion that it isn't cost effective on a Mercedes diesel. These engines already run 500Kmi+ with the standard setup. The 2 gallon sump and oil cooler work well & soot is the biggest issue with extended drain intervals. Soot values vary widely depending on engine timing, driving habits, and overall engine condition. Generally speaking MB diesel engines BREAK before they wear out. Even the bottom end on the gas motors make it past 600Kmi+ if the engine is well cared for. I can run 10-13Kmi in mine and keep soot % well below 2%. If you're trying to avoid changing engine oil, then I guess go ahead and put one.

Brian

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Brian Toscano

The 617 and 60x engines use a similar filter design. The 617 filter is a bit narrower than a 60x. Do NOT buy Bosch oil filters! They are Made in India and NOT approved. Use MANN, Hengst, or Knect.

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Brian Toscano

Why would you want a bypass filter? What is your objective?

check out this link, should answer all your questions. iuse these systems on heavy truck applications in the uk & have been very succesfull eg; longer drain interval & longer engine life.

http://www.kleenoil.co.uk/

regards
wagger

I think if there was any significant improvement possible, than MB would have put one on. Besides the body will fall apart before before the engine dies anyway; so you streach the rebuild another 100k it's all academic.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

You would have to use a bypass filter with a fine enough rating to remove the carbon to beat the factory one. Don't know the rating, but I'd bet 2-5 micron, so you would only get better by using a 1 micron one. I don't know what you would gain, though -- I'm not sure you can remove enough of the soot to make it worth your time.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!

You want your '87 TD to last forever? Just change the oil regularly and don't let that 603 eng. overheat. As it has already been mentioned, these diesels will run forever as is. If there was an engineering need for a by-pass filter, it would of been installed at the factory.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member

1. To see if I can make this engine last longer than me.
2. In an attempt to extend the oil/filter change intervals.
3. As an exercise to familiarize myself with this wonderful new automobile. I enjoyed doing this to my two TDIs and was looking for same but...

You guys have convinced me that MB has done a better job than VW at oil filtration and there appears there are more beneficial ways to spend my time/$ on this car. Thanks so much for the advice which is well taken by this new MB diesel owner.

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300TD W124, Two VW TDI Passat Wagons,Cummins Ram 250, Kubota Tractor
23 cylinders sipping the sweet sauce of the soy bean

1. If you give the car preventive maintenance and respect its operational parameters, it will probably last as long as you want it to.

2. The limiting factor is soot. Unfortunately, most soot particles are too small to be stopped by typical bypass filters. Diesel soot particles are generally in the range of 1/100 to 1/10 of a micron. Particles this small do not cause wear. What is important is that you prevent these particles from conglomerating. Diesel engine oil does just that, and the CI-4 oils (particularly mineral) are the best at dispersing soot. Since you burn biodiesel, I'm assuming you are burning B20, you are not producing as much soot as regular diesel. You might be surprised at how low your soot levels are, granted the engine is in good health and your B20 is good quality.

From a cost effective standpoint, the best method of insuring long engine life is to use inexpensive CI-4 oil and a 3-5k mile OCI. Synthetic oil, bypass filters, and used oil analysis will only end up costing you more money in the long run. If you despise changing your oil and filter then it makes sense to attempt the extended intervals, regardless of expense. If you are an environmentalist, you should be riding a bike.

We`re burning B100 for most of the year and B80 in the dead of winter so yes, our production of soot can be minimum.

We want to use as little petroleum products as possible and are willing to pay the price for synthetics. Cost effectiveness is an issue but I want to get some base line data with oil analysis every 5k for the first 20K. Because we`re burning high levels of biodiesel my interest is in understanding any ramifications in doing so by having the oil analysed.

We`re building a modest sized energy efficient passive solar home in a small town where we can walk/bike to anything we need and burning biofuels in the home appliances and high mileage cars is our way of living the good life. And I wouldn`t call myself an environmentalist, I`m a designer/builder/developer by trade. Enviros hate developers don`t they?

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300TD W124, Two VW TDI Passat Wagons,Cummins Ram 250, Kubota Tractor
23 cylinders sipping the sweet sauce of the soy bean

I think you will find that an inexpensive mineral HDEO will perform very well until you reach the soot ceiling.

You do know that synthetic oil is made from petroleum. I'm just checking because I have heard of people who use synthetic because they think it is a petroleum free product. What is your motivation for living a minimal petroleum lifestyle?

I am suprised to hear you are using B100 and B80. I have heard that these MB's have issues with the higher concentrations of biodiesel. The rubber fuel lines tend to breakdown even with B20 but to a lesser extent. I use Schaeffer's Soyshield additive with regular diesel fuel(no biodiesel in my area). It made a significant reduction in soot in both my MB and TDI. I'm curious what you are paying for B100?

Yes, I am well aware that the synthetic oils are petroleum based, it is the longer change intervals we are looking for that will enable us to use much less of it. It would be impossible to avoid using petroleum products completely, even if all we used for transportation was our bikes....gotta have tires, I`d just choose those that lasted longer.
Ahh, you would have to ask that. I guess the short answer is an attempt to remove ourselves, as much as possible, from the personal responsibility for the madness that petroleum brings to our not so peaceful, not so clean planet. I`ve got a picture I wish I could post that just about says it all.
We just got the MB yesterday and plan on putting it on the same vegitarian diet that the TDIs, F250, and Kubota have been on for the last four years. There are a few others burning B100 in these 603s without any modifications except changing out the inter-injector lines, which we had to do in our other vehicles. We realize that we are guinea pigs burning the high blend biodiesel fuel, hence the caution and the oil analysis.
At the moment B100 at our local pump is something like $2.90. Our last bulk purchase (500 gallons) was $2.40 but after the rebate check from the Maryland Soybean Board for half that cost we are down to $1.20 per gallon. Kind of a no brainer in my book but we`ve happily paid $3.50 in the old days. With the TDIs getting up to 47 MPG who cares what fuel costs. B100 pricing varies widely due to location and base stock. We are careful to feed our vehicles only high quality, virgin oil based, ASTM standard, home grown fuel.

Here`s a little fact that always gets me;
Biodiesel is more biodegradable than sugar and less toxic than table salt.

Why would I not use this to propell myself, my family, and my business, around the surface of this blue/green ball spinning through time and space? The alternative has much more dangerous and deadly consequences.

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300TD W124, Two VW TDI Passat Wagons,Cummins Ram 250, Kubota Tractor
23 cylinders sipping the sweet sauce of the soy bean