When i checked my oil the other day. It was pure black. and it smelled really bad like gas?? what could cause that?

time to change the oil perhaps

Could be a couple things. How well does it run? What year/engine? But it just might need a good oil change. If oyu have a higher milage jeep suggest running a K&N oil filter. I have on on my 00 XJ w/98K and it keeps my oil cleaner, longer than the Fram filters.

10-4 mx, need an oil change