What is this
 

Hey guys, have any of you ever seen this before? I keep finding it over a block plug on the driver side of my small block. I have wiped it away a couple times and noticed it keeps returning.

Re: What is this
 

It looks like an anti-freeze drip. If it is not right at the edge of the freeze plug it could be a crack in the block.

LockDoc

Re: What is this
 

there is a threaded plug think its a drain in the center area of the block that can rot away and leak looks like that's about the spot kind of raised spot there hard to tell its such a tight area . they are a common plumbing fitting if you can get the old piece out . the plug is on the bottom right of this pic next to the dipstick tube hole . there is another one on driver side

Re: What is this
 

It is one of the pipe plugs. I wipe it away and can tell water is mixed in. I have just never seen any yellowish stuff come out before. Thanks guys.