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Old July 25th, 2012, 10:30 AM   #4
addicted
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Join Date: 08-31-08
Location: Byron, MI
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Amsoil.

This is their newest high zinc product. http://www.amsoil.com/storefront/zrt.aspx

This is what I run in the sister in laws '04 WJ with 4.0 that was the wifes DD since new. http://www.amsoil.com/storefront/amo.aspx It has over 210K on it. A couple lifters did their ticking thing at 180K. I Replaced the lifters, cam and other, 'while i'm in there' things. The cylinder walls still had the cross hatching in them and all the bearings had considerably little wear.
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