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Old 12-23-2016, 06:37 AM   #1
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Diesel exhaust soot on tow car

We recently changed to flat tow after using a car dolly. Now were are seeing "soot" on the front driver's side of the toad. Suggestions? Thanks.
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Old 12-23-2016, 07:09 AM   #2
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I never see such on my toad, you sure it's not from the slobber tube? Do you see smoke from the exhaust? My 06 Cat C7 rarely puffs a bit of visable smoke.
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Old 12-23-2016, 07:15 AM   #3
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If that's coming from your engine, I'd say you have an issue. I'm thinking that it's likely road grime being slung onto your car. Do you have any type of mud shield/flaps installed on your coach? Have you looked into a rock shield for your toad?
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Old 12-23-2016, 07:24 AM   #4
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If that is coming from your exhaust, I would think you would have seen it with a tow dolly as well. I'm thinking it's something else.
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Old 12-23-2016, 07:36 AM   #5
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That looks like crankcase venting through the slobber tube. Put a water bottle an the slobber tube & it will usually cure the problem. Cummins makes a kit to redirect that oil back to the engine also.
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Old 12-23-2016, 08:18 AM   #6
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There are lots of discussions on the "Toads & MH Towing" thread here at the forum about how to protect your car. My favorite is the car shield which is basically a big bra that covers the windshield as well as the front of the car.

But I agree with the others, figure out what changed and why you are now getting grime on the car. It appears to be some possible issue with your MH.
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Old 12-23-2016, 08:22 AM   #7
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I never see such on my toad, you sure it's not from the slobber tube? Do you see smoke from the exhaust? My 06 Cat C7 rarely puffs a bit of visable smoke.
Thank you. Not sure about the slobber tube but will check it out. No smoke from the exhaust.
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Old 12-23-2016, 08:25 AM   #8
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If that's coming from your engine, I'd say you have an issue. I'm thinking that it's likely road grime being slung onto your car. Do you have any type of mud shield/flaps installed on your coach? Have you looked into a rock shield for your toad?
Thank you. Just returned from trip to FL and MH ran great so probably (hopefully) not an engine issue. Have mud flaps on coach and looking to get a rock shield.
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Old 12-23-2016, 08:26 AM   #9
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That looks like crankcase venting through the slobber tube. Put a water bottle an the slobber tube & it will usually cure the problem. Cummins makes a kit to redirect that oil back to the engine also.
Thank you. Will try this.
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Old 12-23-2016, 08:28 AM   #10
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Originally Posted by Gormleys View Post
There are lots of discussions on the "Toads & MH Towing" thread here at the forum about how to protect your car. My favorite is the car shield which is basically a big bra that covers the windshield as well as the front of the car.

But I agree with the others, figure out what changed and why you are now getting grime on the car. It appears to be some possible issue with your MH.
Thank you. We will look for a car shield.
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Old 12-23-2016, 11:04 AM   #11
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We have an alumilight tow bar, I think is the brand. It has a rock
guard that rolls up and is fastened to the bar when not in use. You
just roll it back and it attaches with 2 keepers to the back of the
bar, that makes a cover that lays over the tow bar all the way and
keeps debris from hitting the car. We had a different one but this
one is really good.
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Old 12-23-2016, 11:15 AM   #12
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Interesting. From the pictures it could come from one of three places since it is on the drivers side.

- engine
- exhaust
- roadway

Is there anything on the coach. If it is something you drove over there should be some on the side of the coach kicked up by the front tire or behind the drive.

If it is exhaust there should be some spots on the coach behind the exhaust.

Something spitting out from underneath. Gauging by the amount of spotting on the toad there should be something visible on the engine or in the general area where it is coming out. Is there anything sucked up the back of the coach? On the frame? Back bumper?
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Old 12-23-2016, 11:21 AM   #13
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We recently changed to flat tow after using a car dolly. Now were are seeing "soot" on the front driver's side of the toad. Suggestions? Thanks.
as others have said either oil leak or slobber tube and as others said put a
can on the slobber tube as far as exhaust smoke unless you have a dpf series engine (mid 2007 and later) you will always have exhaust soot in the tail pipe and some visible while accelerating
If your poring the coals to her like I do you will get some exhaust soot on the tow vehicle but whats pictured is oily not soot
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Old 12-23-2016, 12:11 PM   #14
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DH looked under coach and said looks like leaking around oil filter. Checked oil level and was a little low.
Nothing on or behind coach that he could see.
Going to have it looked at next week.
Thank you.
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