grumpyvette Posted August 3, 2007 Share Posted August 3, 2007 the old familiar stuffs getting hard to find E.O.S. was discontinued but..... http://www.sdparts.com/product/1052367/GMEngineOilSupplimentEOS16ozBottle.aspx the new stuff... http://www.acdelco.com/html/pi_vehcare_lub.htm (use the drop down menu) Part 10-106 12371532 E.O.S. Assembly Lubricant (1 pint) its still available if you know where to look, most but not all parts counter guys will know this but youll run into a few who just insist its not available Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted August 3, 2007 Share Posted August 3, 2007 Thanks! More info for my upcoming engine rebuild project. The more I procrastinate, the more I learn. Quote Link to comment Share on other sites More sharing options...
bjhines Posted August 3, 2007 Share Posted August 3, 2007 I have a flat tappet 1964 Corvette 327 engine with a mild cam and a stiffly sprung valvetrain. I have been told that the lack of Zinc additives in modern oil will cause accelerated cam lobe wear on this engine. E.O.S. or something like it was suggested as an oil additive to address this problem. GM says not to add this stuff to engine oil. I have been told that Diesel engine oil should be used instead of regular motor oil because there is Zinc in Diesel oil. I have been checking specs on modern truck oils and it seems that the Zinc is dissapearing from these oils as well. What product is reccomended? for the early flat tappet designs? Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted August 3, 2007 Share Posted August 3, 2007 Valvoline RACE OIL, or Certain Amsoil use zinc in decent quantities. Also Shell Rotella Diesel oil has a ton of zinc. http://www.valvoline.com/pages/products/product_detail.asp?product=95 http://www.a1lubricants.com/moreform.html http://www.hotrod.com/pitstop/hrdp_0702_pitstop_zinc_oil_additive/index.html http://www.micapeak.com/info/oiled.html <---an old chart so double check the data Not sure if Motorcycle oils are OK for cars but they generally dont worry about catalyzer damage or O2 sensor damage, and have higher levels of zinc. Quote Link to comment Share on other sites More sharing options...
bjhines Posted August 3, 2007 Share Posted August 3, 2007 ok.... after some research it seems that Shell and others are reducing Zinc in their Diesel oils every year. Rotella may be out by next year and the %Zinc specs vary from different sources. Is there an additive that we can pour into our synthetic oil to increase ZINC??? Quote Link to comment Share on other sites More sharing options...
lbhsbZ Posted August 3, 2007 Share Posted August 3, 2007 ok.... after some research it seems that Shell and others are reducing Zinc in their Diesel oils every year. Rotella may be out by next year and the %Zinc specs vary from different sources. Is there an additive that we can pour into our synthetic oil to increase ZINC??? Just have the cam galvanized Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted August 3, 2007 Author Share Posted August 3, 2007 not GALVANIZED, http://www.cranecams.com/?show=promo&id=48 http://www.cranecams.com/?show=promo&id=48 btw MOLY base lubes are your first and best break-in lube durring the first few minutes http://www.cranecams.com/index.php?show=browseParts&lvl=2&prt=15 http://www.cranecams.com/pdf/548e.pdf CRANES Super Lube Break-In Concentrate is an anti-wear additive formulated with a high concentration of special zinc dithiophosphate to provide sustained protection against cam lobe and lifter scuffing and wear. This oil supplement is to be added to the engine oil for the initial break-in period after the installation of a new camshaft and lifters. Part No. 99003-1 -- 8-ounce container Quote Link to comment Share on other sites More sharing options...
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