After browsing through my engine bay debating whether to clean it up or not, I noticed the top of my passenger side battery and the roof above it were wet. After smelling it, it seems to smell like diesel, but im not positive. It just came to me that it might be coming out of my battery? I dont think this is the case but I will have to check it out. Any other possibilities??

I also happened to look at my coolant reservoir and noticed abotu a 1/2" dark layer on top of the green coolant. Basic properties of oil allow it to float upon a less dense liquid, such as water (coolant) if memory serves me right. I dont know about fuels liquid properties and if it can float. How could oil, or I guess possibly fuel, be getting into my coolant reservoir and what if any damage can it cause?

I can't believe the amount of problems I have had in the last month. All of a sudden they all hit at once. Transmission, glow plugs, GPR, now this. But I still love her

 

Could be injector cups leaking or maybe your oil cooler.

 

how can i go about checkign these things

 

If its fuel i would say a cup, you would be able to tell fuel and oil apart, the fuel looks just like it does coming out of the pump, just in the wrong tank. take a look and see if it is fuel or if it is black oil.

 

well i see it in the reservoir and its black but if i stick my finger in there it wont come out with oil on it...

 

I had diesel in my coolent and it was not black at all in fact it looked like the amber antifreeze sitting on top of my green. i would bet its an oil cooler leak.

 

When my injector sleeve was leaking it looked a little black. Almost looked like the bars leak additive or something similar. I flushed the system and ran it with water, and then had the clean amber diesel show up. The fuel may be "cleaning" some crap out of the cooling system.

 

how can i check my oil cooler, injector sleeve/cups, etc. to see if there leaking

 

Good call, it is a solvent of sorts

 

i would do like large fries did and flush the system too see if it is for sure fuel. if it is fuel you need to replace those sleeves

 

try refilling and running your cooling system with water and see if it is still oily or diesel. You could try skimming some off the top too, with a coolant tester (or turkey baister if you want to sacrifice one) and see if its oil or diesel. When I opened my degass bottle it really smelled of diesel and not oil.

 

Mine too, smelled like i was at the pump

 

yeah, I did the finger test like nhill2090, thinking wtf is this! the black didn't stick.

 

Thanks for your help too large, the job wasent to bad i after 600 miles i have no diesel in that bottle

 

not a problem, pieced most of info from this forum and trying to give back. I have couple 1000kms on mine and still good.