SUBARU3 Posted July 27, 2010 Share Posted July 27, 2010 Has anyone here discovered the importance of adding ZDDP (Zinc to our precious EA71 and 81s)? What a science! Most oils now days do not have enough to prevent premature wear on our flat tappet engines. I know the mobil 1 15w50 has about the right amount at 1200 ppm, but most oil is severely lacking. I just added additional to all my engine tonights. Good reading: http://www.bobistheoilguy.com/cms/ (search ZDDP) http://www.zddp.net/ http://www.lucasoil.com/products/display_products.sd?iid=82&catid=9&loc=show Link to comment Share on other sites More sharing options...
ls650v Posted July 29, 2010 Share Posted July 29, 2010 Good question. I understand Valvoline VR1 Racing Oil still has a good dose of ZDDP in its formula. Link to comment Share on other sites More sharing options...
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