Ok That is not a normal walmart shelf oil. Also Phophorus is not zink I didn't see it list ZZDP levels. It is also not under 2.50 a QT like the oils at walmart these folks are looking at. Here is what I use. My machinist uses this when Joe Gibbs oil is too expensive. http://www.valvoline.com/racing/ Note the Zink level is .12 and the phophorous level is .12. The conventional oil is 3.50 a QT at my local Napa auto parts store. Davis Tom Jennings <tomj@xxxxxxx> wrote: http://www.mobiloil.com/USA-English/MotorOil/Files/Mobil_1_Product_Guide.pdf Note that the 15W-50 specifically says "for flat tappet/performance engines" and has 1200 ppm phosphorus (zddp I suppose). That's for regular Mobil1 as well as "Extended Performance" and the regular stuff is a lot less money. Note also it says that the turbo diesel oil will have P reduced soon. But it looks like they recognize a niche oil for us flat tappet nuts. _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list -------------- next part -------------- An HTML attachment was scrubbed... URL: http://splatter.wps.com/pipermail/amc-list/attachments/20080318/5297ae4d/attachment.htm _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list