03-10-2008, 11:03 pm
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| Corvette Enthusiast Join Date: Dec 2006 Posts: 5
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|  Zddp Oil Addative 67/427/435
Corvettemechanic Is it really necessary to use ZDDP Oil Addative to protect the Camshaft in thsee old high performance solid lifter engines? Thanks, Bill T. | ||||||||||||||||||||
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03-11-2008, 04:11 am
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| GM World Class Certified Technician  Join Date: Nov 2006 Location: New Haven Ct Posts: 5,141
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HI there, No, it really is not. Here is a link to an SAE paper on the affects of SDP and what it does and what you need. Allthebest, c4c5 http://206.160.145.240/servlets/prod...D=2004-01-2986 | ||||||||||||||||||||
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