got a nice moderate sized splotch of an oily substance under the MJ confirmed upon swapping parking spots. Based on position of the splotch (technical term) directly below the tranny/driveshaft ujoint the only possible culprit is the output of the tranny? so my guess is it smells like tranny fluid (my sniffer is a little disfunctional tonight). Bad seal? This is under my MJ, specs are in my sig, and as always TIA for sharing your knowledge on the subject.