A little TFE thread sealer (the paste type with teflon works the best I've found on any type of threads that must be sealed. This sealer is inert to almost any kind of liquid or gas (oil, gasoline, water, propane, etc.), and does not impede removal when it's time for the next oil change. At Wal Mart you can also get a better new plug with matching threads, a sealing washer and a standard hex head for a couple of $. I sure would not forgo the benefits of synthetic oil over a leaking plug or gasket. Inspection of the engine of my last D after nearly 100K miles (95K ran with synthetic) removed any doubt I had about the benefits of synthetic. The interior was essentially free of any deposits or coatings and the wear surfaces were within new tolerances. Easier cold weather starting and warm-up, better gas mileage and resistance to high-temp breakdown are added scientifically-proven benefits. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com 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/