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Old 01-17-2020, 04:11 PM
vwalburn vwalburn is offline
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Join Date: Nov 2019
Location: Wichita, Kansas
Posts: 20
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Should the question be asked as to how many miles a person drives their flat-tappet engines between oil changes in regards to how much ZDDP is needed? I've heard that there is enough ZDDP in regular oil for around 1000 - 1500 miles on an oil before more ZDDP would be needed. And, how it is driven i.e. - casual street driving vs. racing. Just some thoughts.

 


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