I am wondering if anyone could hekp me out? I have a 06 2500 Cummins diesel 4X4, quad cab, long bed with 45000 miles. for a long time now I have been having a small puddle under my truck of some sort. all my fluids seem good and I cannot figure out what this is. it seems to happen mostly overnight. any thoughts. please let me know.

thanks.


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I Just need more info on this....
#1. Have you put your finger in it and smelled it? does it Smell like diesel or oil?
#2. what color is it? Black, Red, green, yellow, etc.
If its black, you know its probably engine oil and might be as simple as the oil drain plug not tight and dripping....worse case scenario rear main seal bad(tranny has to be dropped to replace that......If its redish in color it would probably be tranny fluid, and could be as simple as a trans cooler line loose or leak at the pan gasket .....Green or yellow would be radiator fluid leak, and could be a hose springing a leak ( although doubtful. or the truck would be running hot and leaking worse under pressure while running vrs parked.)
If its diesel, that could be coming from a number of different places also....
If your unsure of where its coming from, place a piece of cardboard under the truck overnight and next morning look directly up from the puddle and see where it is coming from (might want to squint. LOL).....But post back with more info so someone can help ya out...

 

Agree with obg, more info would be helpful. First guess would be the water pump, it will leak slowly as the seals start to wear out. The water pump will only leak on the days you drive it.

 

A/C condenser? If you use the A/C alot after you park water will drip. Probably not your issue but just in case

 

I thought of this, but unable to be sure without knowing the color or smell of the liquid

 

First of all In the Cummins section you would be better suited.
Second The "APP" you are using for the Forum is not made by Dodgeforum.com (Someone else has made this "APP" and could possibly getting your INFO)
Third somekind of example of what the fluid looks smells like?

 

Huuummmm, And yet another OP abducted by aliens aparently..lol... didn't re-post over in the diesel section either??