Patrol (exhaust) leaving crap behind at start-up

[Hodge]

Noticed dark patches of... crap on driveway as of late. Just realized today, it's in fact coming out of the exhaust at start-up. Dark matter of something, it's not oily or wet, it's just kind of powdery from what I can tell.
Bad photos, but you get the idea of what I mean. Why is this?

Edit: My mate reckons it's normal, and it's the very reason some shops do not allow reverse-parking close to the shop due to diesels spraying crap like this everywhere. I've personally never seen it before, or knew about it.

[happygu]

Hodge,

I have noticed mine has done the same lately.

Mic

[boots]

I agree with your mate Hodge . Thats what diesels / (oil burners do) . Mine does the same at start up , I just pressure wash the driveway every few months to combat the situation.

[Hodge]

Thanks for the comments. I was aware diesels leave gunk behind, I've noticed after a while, the back of the car, especially being white, is just putrid from it. But, i'm just curious about the fact, that am I only noticing the crap on the floor lately and not prior. Weird.

[boots]

Probably the new cat in the 2.75 " zorst is less restrictive than OE .

[taslucas]

I agree with your mate Hodge . Thats what diesels / (oil burners do) . Mine does the same at start up , I just pressure wash the driveway every few months to combat the situation.

x2 with this. I think its fairly normal

[nissannewby]

Just a bit of carbon and unburnt fuel. Nothing to be worried about.

[NP99]

Adding to our global warming scam.....

[happygu]

Thanks for the comments. I was aware diesels leave gunk behind, I've noticed after a while, the back of the car, especially being white, is just putrid from it. But, i'm just curious about the fact, that am I only noticing the crap on the floor lately and not prior. Weird.

I have only noticed it after the new exhaust, so I have put it down to the free-flowing cat....

Mic

[threedogs]

That's why we have a "carbon tax" lol
just doing you're bit