Yeah, that's what I was wondering about. I figure it's some material that hardens under pressure, and gets blown out the exhaust or hids in the cracks. I suppose it won't kill to try it, seeing as the straight 6 is old, and original. Been rebuilt once, but that was in 94 and it seems to be leaking a little on number 3 and 6. Seeing as I may rebuild it or swap in an 8 cyl. I think I'll go get some for amusement.
Please note: This is just a temporary fix. I still think almost all chemicals are total bullshit! <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>