Exhaust leaving residue

[DHerren]

My 2005 dodge ram with 5.9 cummins @ 135k miles is starting to leave a black sooty mark on my driveway at start up. Any ideas what is causing this? Turbo maybe?
Any help appreciated.

 

[chri5k]

It is just marking its' spot.

 

[DHerren]

It never used to.

 

[chri5k]

Any new diesel trucks in the area? Have you been talking or thinking about a new truck?

Or may be dirty and/or sticking injectors. Try a gallon of Opti-lube XPD at the recommended dilution. It is an excellent cleaner/ lube. Only fuel additive I would use.

 

[DHerren]

chri5k, nope, no new trucks in the hood, and I would never even think of another truck! Thanks for the input, seems like an easy thing to try.

 

[GTyankee]

I don't need it yet, but i will keep it in mind

Opti-Lube XPD Formula Diesel Fuel Additive: Quarts (1 Quart (Treats 128 Gallons))​

Visit the Opti-Lube Store

Amazon price $31.72

 

[06 Dodge]

I don't need it yet, but i will keep it in mind

Opti-Lube XPD Formula Diesel Fuel Additive: Quarts (1 Quart (Treats 128 Gallons))​

Visit the Opti-Lube Store

Amazon price $31.72

I use there Summer blend with Oregon mandated Bio to be used I have no need for an additive with extra lube, I would prefer their Boost additive but it does not remove water...