</font><blockquote><font size="1" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">quote:</font><hr /><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">Originally posted by CreekFisher:
<strong>The "dip theory" sounds good to me. Same thing as a J-trap in a plumbing system.</strong></font><hr /></blockquote><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">What dip theory. Roger is saying that there shouldn't be any dip so that the oil will go back down. What's the purpose of the J-trap? Isn't that a trap for all the crude that will fall down from the sink drain?