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BMW Diesel Owners / Enthusiasts
Do you own a diesel powered BMW? Maybe a 335d or a BMW x35d? Come and talk about what makes your car great!

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  #1  
Old 11-29-2010, 09:33 AM
tlak77 tlak77 is offline
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Location: Marion, IA
 
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Mein Auto: F30 335i
Amount of soot at the rear of 335d...

Gents,
I have AW and especially now with rain and snow coming, I started to pay more attention to the amount of "soot" I'm getting at the back of the car. Rain leaves black streaks and snow won't help either.
Photos are taken after clean wash and 65miles drive on the HWY. Sorry for the photo quality
Are other drivers seeing about the same amount?
Comments....
Thanks Tom

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2013 335i F30

B45, LCSW, ZMM, ZDH, ZPP, ZTP, 337, 2TV, 428, 494, 688, 6AA, 6AB, 6VA
2010 335d E90 - Gone
300, LCAD, ZPP, ZSP, 2XA, 302, 465, 494, 4B9, 609, 655, 677, 6FL, 6NF
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  #2  
Old 11-29-2010, 09:41 AM
BMWTurboDzl BMWTurboDzl is offline
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And you know this is soot because? Have you tried the coffee filter over the exhaust?
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  #3  
Old 11-29-2010, 09:49 AM
TForan TForan is offline
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I bet the JBD causes added soot.
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  #4  
Old 11-29-2010, 10:16 AM
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bimmerdiesel bimmerdiesel is offline
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what is your build date? BMW changed break pads somewhere around MY 10. If you have earlier break pads then that it could be break dust.
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  #5  
Old 11-29-2010, 10:52 AM
tlak77 tlak77 is offline
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JBD has been off for a while now, and I've had the same amount of "soot" since day one. I'll give it a tray with the coffee filter - good idea. No issue with the break pads - wheels are nice and clean. The "soot" is nicely distributed over the rear bumper and trunk all the way to the top, I don't see anything similar around the wheels. The particles are very fine when I look closer. I'm sure it's related to the exhaust. I'm not concern about it too much just wanted to know if the amount other owners seeing is similar.
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2013 335i F30

B45, LCSW, ZMM, ZDH, ZPP, ZTP, 337, 2TV, 428, 494, 688, 6AA, 6AB, 6VA
2010 335d E90 - Gone
300, LCAD, ZPP, ZSP, 2XA, 302, 465, 494, 4B9, 609, 655, 677, 6FL, 6NF
Flickr
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  #6  
Old 11-29-2010, 11:31 AM
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62Lincoln 62Lincoln is offline
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It might just be road dust instead of soot. Have you rubbed the inside of your exhaust tips (when cold of course) to see if you have any soot buildup in them?
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  #7  
Old 11-29-2010, 11:39 AM
Snipe656 Snipe656 is offline
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I always see black build up on the bottom inside of the tailpipes on 335d cars I encounter within parking lots. Half wondered what it is because it does not look quite like soot to me. If you are getting enough soot out the tailpipes to get it onto the back of the car then I'd be really surprised if your tailpipes did not have even more soot within them. I am betting that is not soot on your car.
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  #8  
Old 11-29-2010, 02:23 PM
HIREN HIREN is offline
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I don't think its soot either. I've never experienced soot on my car and I always hand wash. If there was that much soot as shown in the picture, I would think your exhaust pipes would be pitch black! My catless STi would leave the rear bumper with a thin layer of soot before I switched to E85 fuel and the entire exhaust pipe would be black with noticeable soot build up inside.
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  #9  
Old 11-29-2010, 03:11 PM
Snipe656 Snipe656 is offline
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I do not think I could even get my Mercedes to show any noticeable signs of soot in such a short drive.
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  #10  
Old 11-29-2010, 03:43 PM
SamToast SamToast is offline
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I have seen the same thing - but I also have a white car. Seems to be limited the the trunk lid/rear bumper areas as well. Exhaust pipes look clean.
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  #11  
Old 11-29-2010, 04:18 PM
tlak77 tlak77 is offline
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Quote:
Originally Posted by SamToast View Post
I have seen the same thing - but I also have a white car. Seems to be limited the the trunk lid/rear bumper areas as well. Exhaust pipes look clean.
Maybe it's a mid-west thing As I said, I always had the same amount of "soot" or whatever it is. My first though was also road dust (or break - but wheels are fairly clean), but I went around the parking lot and none of the cars has anything similar on them, and I commute on the same roads everyone else. I went outside during the lunch time and wiped the tail pipe with the finger some soot was present but as Sam said my pipes are clean although I always clean them while washing the car.
Sam is your commute a long trip most of the time? My work commute is 10 miles mostly traffic during the week.
Others thanks for comment, but can anyone wipe there finger in about the same area I did and just say Yes or No to the "soot"
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2013 335i F30

B45, LCSW, ZMM, ZDH, ZPP, ZTP, 337, 2TV, 428, 494, 688, 6AA, 6AB, 6VA
2010 335d E90 - Gone
300, LCAD, ZPP, ZSP, 2XA, 302, 465, 494, 4B9, 609, 655, 677, 6FL, 6NF
Flickr
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  #12  
Old 11-29-2010, 04:20 PM
mariahell3 mariahell3 is offline
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hello im new this forum may i know the price of your car??
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  #13  
Old 11-29-2010, 04:26 PM
Penguin Penguin is offline
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Quote:
Originally Posted by tlak77 View Post
but I went around the parking lot and none of the cars has anything similar on them, and I commute on the same roads everyone else.

What do you use to "wax" the vehicle? I've noticed that some polishes/waxes tend to attract dust on the rear more than others. It tends to collect on the rear due to airflow/turbulence patterns, sorta like why some SUV rear windows get covered with dust.
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  #14  
Old 11-29-2010, 04:56 PM
tlak77 tlak77 is offline
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Quote:
Originally Posted by Penguin View Post
.....It tends to collect on the rear due to airflow/turbulence patterns, sorta like why some SUV rear windows get covered with dust.
I agree with airflow and I could buy that if whatever I'm wiping off was not pitch black, we get dust all summer long as you know and it is in much lighter color.
BTW I always protect my cars for winter with 3 layers of Klasse SG topped with 3 layers of 845 (which does attract dust) and after each wash I use Mothers spray wax which binds very well with my 845
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2013 335i F30

B45, LCSW, ZMM, ZDH, ZPP, ZTP, 337, 2TV, 428, 494, 688, 6AA, 6AB, 6VA
2010 335d E90 - Gone
300, LCAD, ZPP, ZSP, 2XA, 302, 465, 494, 4B9, 609, 655, 677, 6FL, 6NF
Flickr
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  #15  
Old 11-29-2010, 05:11 PM
Snipe656 Snipe656 is offline
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Okay, I just wiped my very dirty car, not been washed in weeks and I did not get on my finger anything that ressembles the soot I wiped off some bags that I have near where my truck warms up in the mornings.
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  #16  
Old 11-29-2010, 05:44 PM
SamToast SamToast is offline
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Quote:
Originally Posted by tlak77 View Post
Maybe it's a mid-west thing As I said, I always had the same amount of "soot" or whatever it is. My first though was also road dust (or break - but wheels are fairly clean), but I went around the parking lot and none of the cars has anything similar on them, and I commute on the same roads everyone else. I went outside during the lunch time and wiped the tail pipe with the finger some soot was present but as Sam said my pipes are clean although I always clean them while washing the car.
Sam is your commute a long trip most of the time? My work commute is 10 miles mostly traffic during the week.
Others thanks for comment, but can anyone wipe there finger in about the same area I did and just say Yes or No to the "soot"
I work from home, though I have a 60 minute commute to/from the airport most weeks. I assumed it was airport dust at first, but noticed it was only prevalent in the rear end of the car.

I have put a good finish on it (Prima Epic, with AutoGlym HD on top for gloss), so perhaps the dust is getting blown off in the front, but not enough flow to do the same in the back. Just guessing, obviously.
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  #17  
Old 11-29-2010, 05:54 PM
tlak77 tlak77 is offline
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Sam, the "dust" you are experiencing is pitch black right? Is there a big coil mine in the middle of Lake Michigan I don't know about which affect rears of both our AW ds
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2013 335i F30

B45, LCSW, ZMM, ZDH, ZPP, ZTP, 337, 2TV, 428, 494, 688, 6AA, 6AB, 6VA
2010 335d E90 - Gone
300, LCAD, ZPP, ZSP, 2XA, 302, 465, 494, 4B9, 609, 655, 677, 6FL, 6NF
Flickr
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  #18  
Old 11-29-2010, 06:17 PM
SamToast SamToast is offline
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Yeah, looks like chimney soot. Of course, I'm downwind of Gary......
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  #19  
Old 11-29-2010, 06:20 PM
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BMW Power BMW Power is offline
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I always thought it was the regeneration of the particle filter that caused the soot. I too have seen it on my aw, but only occasionally.
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  #20  
Old 11-29-2010, 08:41 PM
Philm35 Philm35 is offline
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I haven't noticed anything like that on my d.

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  #21  
Old 11-30-2010, 04:47 AM
tlak77 tlak77 is offline
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Quote:
Originally Posted by BMW Power View Post
I always thought it was the regeneration of the particle filter that caused the soot. I too have seen it on my aw, but only occasionally.
I wonder if I experience more of it (more apparent) since most of the time I have a short commute. As far as I remember regeneration process is more frequent if the commutes are short.
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2013 335i F30

B45, LCSW, ZMM, ZDH, ZPP, ZTP, 337, 2TV, 428, 494, 688, 6AA, 6AB, 6VA
2010 335d E90 - Gone
300, LCAD, ZPP, ZSP, 2XA, 302, 465, 494, 4B9, 609, 655, 677, 6FL, 6NF
Flickr
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  #22  
Old 11-30-2010, 05:01 AM
KarlB KarlB is offline
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no soot on the back of my d saph blk met., brown dust that shows up really quickly--- unless certain plants are in bloom then yellow pollen that shows up really quickly but wiping the rear end of my car opff I get nothing black off it at all
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  #23  
Old 11-30-2010, 05:26 AM
Tuce Tuce is offline
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I've gotten soot on my tailpipes. I think it depends on the fuel I use.
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  #24  
Old 11-30-2010, 07:37 AM
Snipe656 Snipe656 is offline
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Quote:
Originally Posted by Tuce View Post
I've gotten soot on my tailpipes. I think it depends on the fuel I use.
If it is at all like the stuff I have seen on parked 335d cars then it is at least far cleaner than how the pipes or really one of the pipes on the 335i cars looks like. I tend to keep my car pretty clean so not sure I have ever had this on mine.
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  #25  
Old 12-06-2010, 10:33 AM
Kernel Krunch Kernel Krunch is offline
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Noob here, that is new to the 335D. I've noticed the soot dusting on my car ever since I picked it up in Aug. It's a 2009, but was new/leftover from previous model year. Do you think the DPF recall for early 2009 manufacture dates has anything to do with this??
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