[DeTomaso] ZDDP - is this stuff any good?

[Pantdino]

When I click the link I see a chart showing how much to add to obtain a certain level of ZDDP.

However, it makes no sense because according to recent virgin oil analyses on Bobistheoilguy.com even the newest oils made for roller engines have at least 700ppm Zinc.  So his chart assumes there is NO ZDDP in the oil you are adding to, which is incorrect.  

Also, be advised that Shell Rotella T 5W-40 synthetic has over 1200ppm zinc out of the bottle.  It is generally felt to be one of the best oils you can  buy and is not expensive.  I believe I paid about $25 for a gallon at Autozone recently and was mad at myself because I  could have picked up another gallon at Walmart when they had it for about $20.  (they sell out fast)

http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1939470#Post1939470 

Jim Oddie


-----Original Message-----
From: fresnofinches at aol.com
To: detomaso at realbig.com; cengles at cox.net
Sent: Wed, Jul 28, 2010 9:41 am
Subject: [DeTomaso] ZDDP - is this stuff any good?



The ZDDPlus website makes it hard to find the ppm levels created when using 
heir product, but an obscure 'LINK' button takes you to a tech report that 
rovides this information.

This link will go to a link for a pdf file that shows ppm levels of phosphorus 
n 5 quarts of oil in relation to the ounces of ZDDPlus used.
>From this chart, 4 ounces (one bottle) would bring phosphorus levels up above 
200ppm in a typical Pantera ten quart (actually around 9 quarts) oil pan.
Since ZDDPlus has higher a concentration of zinc to phosphorus, it follows the 
inc levels would also be brought up into the 'safe' range.
http://tinyurl.com/PPM-phosphorus
Larry

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