Keeping DPF Clean
Thread Starter
Junior Member
Joined: Jul 2016
Posts: 29
Likes: 1
From: Dallas - Texas
2009 Mercedes E320 , 1982 Mercedes 300 SD, 2005 Suzuki Forenza
Keeping DPF Clean
I have a 2008 E320 Bluetec and I know that these cars have a DPF system which no only is costly but also need some special care from the owner.
I had my DPF removed and professionally cleaned in a company that only do this kind of job. It was cleaned using what they call "cooking method". They cut the DPF case in two pieces and cook the DPF itself (the filter) for around 8 hours and then clean it, reassemble and test for performance.
Many mechanic say that it is good to add to the Diesel fuel some additive to help keep the exhaust system clean but many of them does not know the appropriated kind of additive to use.
As Mercedes Benz are a kind of sensitive engines and they have too many restrictions about what to and what not to use in their engines, I would like to know from this forum if someone has some good recommendation for some good product to add to the fuel in order to keep the exhaust/ DPF system running healthy.
My car is driven 55 Miles everyday in highway at speed of 65MPH, which according to Bluetec owners, it is good for DPF's system.
Thanks
I had my DPF removed and professionally cleaned in a company that only do this kind of job. It was cleaned using what they call "cooking method". They cut the DPF case in two pieces and cook the DPF itself (the filter) for around 8 hours and then clean it, reassemble and test for performance.
Many mechanic say that it is good to add to the Diesel fuel some additive to help keep the exhaust system clean but many of them does not know the appropriated kind of additive to use.
As Mercedes Benz are a kind of sensitive engines and they have too many restrictions about what to and what not to use in their engines, I would like to know from this forum if someone has some good recommendation for some good product to add to the fuel in order to keep the exhaust/ DPF system running healthy.
My car is driven 55 Miles everyday in highway at speed of 65MPH, which according to Bluetec owners, it is good for DPF's system.
Thanks
Super Member
Joined: Sep 2018
Posts: 882
Likes: 159
S204 C250 CDI Sport
Diesel suffers from an incomplete fuel molecule burn due to ignition delay and innert gasses from the egr causing soot .
To assist the ignition point is a bonifide Cetane booster , 2-EHN .
This will make for an easier time for the dpf .
To assist the ignition point is a bonifide Cetane booster , 2-EHN .
This will make for an easier time for the dpf .
Junior Member
Joined: Sep 2019
Posts: 19
Likes: 2
2006 e320
I would check and see if you cannot get a tune which minimizes some of the egr volume.
Best thing you can do for do om642 is to minimize oil in the intake. So keep the oil between minimum and 1/2way on the oil. I would encourage doing oil changes early and use 229.52 oil. The airfilters are small, id 1/2 the interval.
Im pretty sure there are companies which can clean your dpf if needed.
M
Best thing you can do for do om642 is to minimize oil in the intake. So keep the oil between minimum and 1/2way on the oil. I would encourage doing oil changes early and use 229.52 oil. The airfilters are small, id 1/2 the interval.
Im pretty sure there are companies which can clean your dpf if needed.
M
Thread Starter
Junior Member
Joined: Jul 2016
Posts: 29
Likes: 1
From: Dallas - Texas
2009 Mercedes E320 , 1982 Mercedes 300 SD, 2005 Suzuki Forenza
I would check and see if you cannot get a tune which minimizes some of the egr volume.
Best thing you can do for do om642 is to minimize oil in the intake. So keep the oil between minimum and 1/2way on the oil. I would encourage doing oil changes early and use 229.52 oil. The airfilters are small, id 1/2 the interval.
Im pretty sure there are companies which can clean your dpf if needed.
M
Best thing you can do for do om642 is to minimize oil in the intake. So keep the oil between minimum and 1/2way on the oil. I would encourage doing oil changes early and use 229.52 oil. The airfilters are small, id 1/2 the interval.
Im pretty sure there are companies which can clean your dpf if needed.
M
Change EGR make sense but only replace without knowing if it is bad or not is not a good idea.
Also about the oil level is another good idea.
Thanks for your reply
Junior Member
Joined: Sep 2019
Posts: 19
Likes: 2
2006 e320
Not talking about egr valve replacement. I'm talking about turning down the max % it can feedback into the intake in the software.
We sold our ml and got a om648 car. Wife an mechanic are much happier. Parts are less expensive too.
Michael
We sold our ml and got a om648 car. Wife an mechanic are much happier. Parts are less expensive too.
Michael
Thread Starter
Junior Member
Joined: Jul 2016
Posts: 29
Likes: 1
From: Dallas - Texas
2009 Mercedes E320 , 1982 Mercedes 300 SD, 2005 Suzuki Forenza
About EGR for these cars, I noticed that MB dealers change EGRs very frequently. I had a 2009 Bluetec and the previous owner had this car serviced by MB and the service report had EGRs changed couple times.
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Member
Joined: Jun 2016
Posts: 161
Likes: 33
From: Orlando, Florida
2005 E320 CDI (SOLD); 2008 ML320 CDI 4MATIC
DPF & SCR exhaust cans are what shortens engine's life regardless how well engine is cared for. They create exhaust back pressure that then increases crank-case pressure so internal engine components such as timing chain, oil cooler, oil filter housing as examples are subjected to this increased pressure & fail. Oil vapor will push up through CCV into turbo's intake then distribute & coalesce through intercooler circuit & intake manifold swirl flaps. Frequent air & oil filters + strict adherence to MB's oil specs can push back inevitable for a little while but eventually DPF's ceramic element will reach saturation of ash plugs & regens will become more frequent (burning MORE diesel fuel) but won't achieve objective meanwhile back pressure will be like bananas in tailpipe, causing issues already mentioned. The om642 should have been installed only in configurations that allowed for 13 quart oil pan & large single air filter like found in sprinter vans. The om642 is basically shoe-horned into 211 & shortcuts were made to make it fit such as 8 qt oil pan & batwing air-filters that suck.
Last edited by PSDCampervan; Nov 19, 2020 at 02:58 PM.
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I have a 2008 E320 Bluetec and I know that these cars have a DPF system which no only is costly but also need some special care from the owner.
I had my DPF removed and professionally cleaned in a company that only do this kind of job. It was cleaned using what they call "cooking method". They cut the DPF case in two pieces and cook the DPF itself (the filter) for around 8 hours and then clean it dpf restoration, reassemble and test for performance.
Many mechanic say that it is good to add to the Diesel fuel some additive to help keep the exhaust system clean but many of them does not know the appropriated kind of additive to use.
As Mercedes Benz are a kind of sensitive engines and they have too many restrictions about what to and what not to use in their engines, I would like to know from this forum if someone has some good recommendation for some good product to add to the fuel in order to keep the exhaust/ DPF system running healthy.
My car is driven 55 Miles everyday in highway at speed of 65MPH, which according to Bluetec owners, it is good for DPF's system.
Thanks
I had my DPF removed and professionally cleaned in a company that only do this kind of job. It was cleaned using what they call "cooking method". They cut the DPF case in two pieces and cook the DPF itself (the filter) for around 8 hours and then clean it dpf restoration, reassemble and test for performance.
Many mechanic say that it is good to add to the Diesel fuel some additive to help keep the exhaust system clean but many of them does not know the appropriated kind of additive to use.
As Mercedes Benz are a kind of sensitive engines and they have too many restrictions about what to and what not to use in their engines, I would like to know from this forum if someone has some good recommendation for some good product to add to the fuel in order to keep the exhaust/ DPF system running healthy.
My car is driven 55 Miles everyday in highway at speed of 65MPH, which according to Bluetec owners, it is good for DPF's system.
Thanks
