Newer SM oils and to some extent SL are also not good for the older style seals and will increase their chances of leaking. It seems the ZDDP while an excellent anti-wear additive, is murder on catalytic converters and no longer needed with roller lifter cams. Best solution is to go with a diesel rated oil like Chevron Delo, Mobil Delvac or Shell Rotella. On the topic of things to watch out for, and sorry if this strays a bit. There was an ad in our local newspaper placed by the police department. This is not some off the wall rumor. There is a scam going around with people being induced to call a number with 809 area code. The area code is for someplace like the British West Indies. The pretense can be something like a relative was in an accident or is deathly ill. If you call, the rate is $2400 a minute. You will get a bill and the phone company will expect you to pay it. The premise is that you made the call and they are only acting as an agent. Save a lot of trouble and aggrivation and do not call a number in 809 area on some fictious premise. Russ Vaughan Jess Miklas <jpmiklas@xxxxxxxxxxxxxxxxx> wrote: Group The June 2006 HOT ROD magazine has an interesting article on engine oil and flat tappet failures. It seems that many anti-wear ingredients are now missing from your basic oils for the sake of environmentalism. There is a deceiving "starburst" seal to watch out for that says "American Petroleum Institute * Certified * For gasoline Engines" Quoting the article ..."You'll see this starburst symbol on the latest API ILSAC GF-4 street legal, energy saving oils. It means they meet all the latest industry oil specs, fully satisfying emissions requirements, and fulfill all the new car manufacturer warranty requirements. But it also indicates seriously reduced ZDDP content, which can cause problems with high-performance flat tappets". Basically this environmental oil works well enough to lubricate roller lifters on new vehicles, but it is not to be used with flat tappet lifters. Buyer Beware. The old car owner gets it in the end again! Not to worry, however; there are still plenty of available oils for flat tappet usage by the informed consumer. Just wanted to bring this to your collective attention. Please read the entire article for your own benefit. Jeff Miklas [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/ SPONSORED LINKS Chrysler 300 series 300 series Chrysler sebring Chrysler town country --------------------------------- YAHOO! GROUPS LINKS Visit your group "Chrysler300" on the web. To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. --------------------------------- [Non-text portions of this message have been removed] ------------------------ Yahoo! Groups Sponsor --------------------~--> Protect your PC from spy ware with award winning anti spy technology. It's free. http://us.click.yahoo.com/97bhrC/LGxNAA/yQLSAA/8LmulB/TM --------------------------------------------------------------------~-> 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/ <*> 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/