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Registered
Join Date: Oct 2004
Posts: 534
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ZDD Plus instead of EOS
Does anyone have any experience with ZDD Plus from Kirban Performance Products. It has twice the amount of ZDDP as a 16 oz bottle of EOS. Costs about $26 to treat 10 liters. Info at www.kirbanperformance.com. (I am not affiliated with them at all.)
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11-03-2008, 07:50 PM
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3 restos WIP = psycho
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
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Damn, a solution for the biggest oil related hot button issue regarding air cooled Porsches and no responses yet?!?
Charles, Steve...where are you? 
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- 1965 911 - 1969 911S - 1980 911SC Targa - 1979 930 |
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11-04-2008, 02:44 PM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Quote:
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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11-04-2008, 05:22 PM
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Registered
Join Date: Oct 2001
Location: Momence, IL 60954
Posts: 1,911
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If you need EOS or Zddplus, you're using the wrong oil :-)
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Charles Navarro President, LN Engineering and Bilt Racing Service http://www.LNengineering.com Home of Nickies, IMS Retrofit, and IMS Solution |
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11-05-2008, 04:33 AM
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3 restos WIP = psycho
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
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Like a case of Castrol 20w50?
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- 1965 911 - 1969 911S - 1980 911SC Targa - 1979 930 |
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11-05-2008, 07:51 AM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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What Charles and I are saying is to use the right oil to begin with,...
IMHO, ZDDP additives are justified for initial engine start when new and during the first 3-4 critical hours of running-in. Beyond that, simply adding additional ZDDP without a corresponding correction/change in the detergent package is asking for trouble and NOT advisable. There are really good reasons for how the chemistry gets balanced in those oil formularies.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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11-05-2008, 03:53 PM
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Registered
Join Date: Oct 2001
Location: Momence, IL 60954
Posts: 1,911
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The only way to be sure of what you are doing would be to know the concentration of the additive, the exact level in the oil you are starting with, and a target amount based off the amount of detegency in the oil. Then only after running this modified oil back to back with the unmodified oil with used oil analysis could you determine whether or not the additive is improving things. This is something not even the manufacturer of this oil additive have done (or at least when they started selling it - because I asked). They are just under the assumption that more is better.
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Charles Navarro President, LN Engineering and Bilt Racing Service http://www.LNengineering.com Home of Nickies, IMS Retrofit, and IMS Solution |
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11-05-2008, 08:09 PM
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Registered
Join Date: Mar 2005
Location: Australia
Posts: 145
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Oil analysis of base oil, and of two oil changes after about 6000kM each. Used additional ZDDP. Engine has 15,000kM since rebuild.
Open for Comments Base Oil  Analysis after 2x 6000kM and additional ZDDP  Paul |
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11-06-2008, 03:38 PM
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