Identify this leak please.

Can anyone help me identify and fix this leak? Is it serious?

Thanks.

 

Looks like someone oiled the joint and some spun off while you drove. I wouldn't call it a leak yet.. probably just spun off the excess wet stuff and its long since finished. Wipe it clean and see if it comes back after driving?

 

That is just some grease that comes from greasing the u joints. That's normal.

 

Thanks for all your guys' prompt responses, I now have some peace of mind. lol

 

Not enough to be concerned about at this point, I agree. However looking at his photo I see a bit of dampness on the dust shield where the drive shaft slips into the back of the transmission. That is NOT from the u-joint. My initial opinion is that he is getting a very MINOR seepage leak from the rear transmission seal.

 

Thats the yoke seal leaking. Its a common issue with pre runners. From the looks of it it doesnt seem to leak a whole lot.