Everytime I start my D lately a mixture of watery oil gets spit out of the tailpipe on the ground, to make roughly a 1x1 foot circle of solid black on my driveway. It seems the longer I pet it sit the more oil comes out and it goes away after it idles for a little bit.
Any ideas what it could be, or is it one of those it could be a million reasons why problem haha, I hate those.

 

The most common that I've seen for oil coming out of the tailpipe is the world famous blown plenum gasket or head gasket. For starters if you have the truck off, open the INS of the throttle body up and shone a flashlight down in there. If you see oil down there instead of a dry kinda rusty environment, you have found your problem.

This happened to me when my plenum was blown, but it wasn't puting out as much oil as your stating.

 

It all started when I put some seafoam in it, it must of loosened up something inside, and from it running rich and probably leaving a bunch of fuel in the intake must be doing the same effect, not sure.

I'll check out the plenum pan tomorrow for sure and see what it looks like and report back. By the way my new cat. is probably trashed too now from all the oil haha it never ends. At least it's not my main daily driver anymore.

 

Man, sounds like you got yourself a project truck!! LOL

 

I've seen this from other autos, could it just be soot from running rich mixed with condensation?

 

You know what mastec, you are a genius, that could very well be it. I was wondering why it cleaned up easier then oil and had no oder either. I'll get a pan under the tailpipe and blast all that junk out of it and let all of the water dry out, hopefully I'm just left with carbon dust.

 

=) Thanks... Glad I could help. That's the first thing that popped into my head when I read your post. We've had a couple vehicles do that in the past and just like you I thought it was oil.

 

I'm going to second this.