Most of those numbers listed are just barely above what diesel oil is allowed to have. Joe Gibbs Racing Oil in comparison to below, their BR oil is 2537 ppm Phosphorous and 2949 ppm zinc which is the highest in the industry. I typically can get the rings to seat in a fresh engine during the first 30 minutes with their BR oil. Their Hot Rod oil is not only again the highest in the industry, it also contains a few other key ingredients like a rust additives for engines that sit for a period of time without running like our old cars. I have been a big supporter of Joe Gibbs oil for some time now and use it in all of the engines we build and own. Nick Alfano Performance 4849-76 st. Kenosha, WI. 53142 262-308-1302 262-942-8271 after 6pm central and weekends >>>>>>>>>>>>>>>>>>>>>>> Message: 1 Date: Tue, 12 Mar 2013 19:05:18 +0000 From: amcngmc@xxxxxxxxx To: amc-list@xxxxxxxxxxxxxxxxx Subject: [AMC-list] High Zinc oils Message-ID: <40089920-1363115121-cardhu_decombobulator_blackberry.rim.net-408437972-@xxxxxxxxxxxxxxxxxxxxxxx> Content-Type: text/plain; charset="Windows-1252" Amsoil high zinc oil: http://www.amsoil.lube-direct.com/20...nc-oil-amsoil/ AMSOILs High Zinc Recommendations: Z-ROD? 10W-30 Synthetic Motor Oil (ZRT) Phosphorus Level (ppm) 1320 Zinc Level (ppm) 1440 Z-ROD? 20W-50 Synthetic Motor Oil (ZRF) Phosphorus Level (ppm) 1320 Zinc Level (ppm) 1440 Premium Protection 10W-40 Synthetic Motor Oil (AMO) Phosphorus Level (ppm) 1265 Zinc Level (ppm) 1378 Premium Protection 20W-50 Synthetic Motor Oil (ARO) Phosphorus Level (ppm) 1266 Zinc Level (ppm) 1379 Series 3000 5W-30Synthetic Heavy Duty Diesel Oil (HDD) Phosphorus Level (ppm) 1266 Zinc Level (ppm) 1379 15W-40 Synthetic HeavyDuty Diesel and Marine Motor Oil (AME) Phosphorus Level (ppm) 1267 Zinc Level (ppm) 1377 Dominator? 5W-20 Synthetic Racing Oil (RD20) Phosphorus Level (ppm) 1424 Zinc Level (ppm) 1575 Dominator? 10W-30Synthetic Racing Oil (RD30) Phosphorus Level (ppm) 1424 Zinc Level (ppm) 1575 Dominator? 15W-50Synthetic Racing Oil (RD50) Phosphorus Level (ppm) 1424 Zinc Level (ppm) 1575 SAE 60 Super Heavy Weight Synthetic Racing Oil (AHR) Phosphorus Level (ppm) 1265 Zinc Level (ppm) 1375 I use the 10-40/20-50 Premium Protection and the SAE-60 in my vintage engines ;o) MHD Sent from my BlackBerry? by Boost Mobile _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com