Vell, I took zee bull by da horns and fired off a question on this topic to the 'Shell AnswerMan'. I am now playing the waiting game to see what reply might come my way. Specially because I happen to know that the EPA has a set of diesel fuel and oil requirements kicking in this year or next. Cleaner fuel and oils are the 'goal' once again. I have to ask my middle daughter about that tomorrow. (she controls the $$ at a local shipping co. terminal here) -- Paul Holmgren 2 57 300-C's in Indy Hoosier Corps #L6 A generation which ignores historyhas no past -- and no future. - RobertA. Heinlein -------------- Original message from "Michael Reed" <mrreed@xxxxxxxxx>: -------------- > We hashed this subject to death a few months ago. > I want to point out to the group that Bruce is mistaken in his post, where he > stated, "All of todays oils now have zero zinc..." and "...by 2004 no oil has > any zinc as per EPA." > There are several companies which produce and sell motor oils which contain > appropriate amounts of ZDDP for our 300s (and other autos of the period). They > are motor oils which are directed to the diesel engine market. Mobil and Shell > are two of those companies. > I use Mobil Delvac 1300 Super in my "F" and in my '70 Chevelle LS-5 *without > reservation* -- there are more than adequate amounts of ZDDP in that product (as > well as other benefits). Shell Rotella T is nearly identical to Delvac 1300 > Super in it's specifications, including the amount of ZDDP it contains. > Both of these products are available in 10W-30 and 15W-40 viscosities. > Mike Reed in Lake Odessa, Michigan > ----- Original Message ----- > From: Gnspeedbird@xxxxxxx > To: chrysler300@xxxxxxxxxxxxxxx > Sent: Saturday, April 26, 2008 22:45 > Subject: [Chrysler300] ZDDP re-visited-the bottom line > > For the past month and particularly this past week the subject of ZDDPLUS > has been thrashed about but not been totally resolved. Simply put all flat > tappet engines need a zinc additive .All of todays oils now have zero > zinc,thus > jeoparadizing the life of our engines..Fortunately ZDDPLUS has been developed > so that one 4oz bottle added at an oil change will have the exact zinc content > contained in oils up to 1985. Since the mid 90's the zinc content has > continually been decreased so that by 2004 no oil has any zinc as per EPA > directives.Every member of this club should educate themselves about ZDDPLUS > by going > to _www.zddplus.com_ (http://www.zddplus.com) most of your questions > will be answered on this site. We are very fortunate that one concerned car > collector footed the bill to develope a product that will save an untold > number of engines. There are many ZDDPLUS distributors throughout the country. > PTS Xtreme at 916-739-0510 has ZDDPLUS in stock.......Bruce Toelle [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: mailto:Chrysler300-digest@xxxxxxxxxxxxxxx mailto:Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/