I just posted a picture of the head mating surface for my intake manifold. I see that one of the blind holes is filled with a very dark grey / black oil. There does not seem to be any oil in the valley of death or any other place and this mystery oil is not the color of my motor oil. Any ideas? D² and 6530 Dave Delman To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/