So I'm going to start this by saying it's not fmj related, but it is automotive related. A buddy of mine has an '05 Furd Ranjer, 140,000 miles. It's been a pretty good truck for him, except now he's having this horrible noise coming from the front end (4WD). After joking with him that he shouldn't of bought a Furd, I rode in it yesterday, trying to figure out what could be screaming. Under acceleration, it has a rumble/groaning sound which goes away at 25 mph, but comes back at faster speeds. It occasionally clunks when he first accelerates, and when he is braking/coasting it sort of has the "tires squealing on slick concrete" sound. I crawled under there once we got back, and looked around. It has independent front suspension, with a CV joint (which appeared to be ok) going to each front tire. He told me he had the brakes done in January. I also rubbed my fingers under the diff cover and they came off covered in gear oil. Also, the whole time it's making noises, he's in 2WD. We never went into 4WD. Without knowing much more, I think it's either wheel bearings or something in the front diff. Could be lack of lubrication, especially with it leaking. He doesn't know the last time the front diff has been serviced. I thought I'd get y'all's opinion on it, just to see what you think.