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Another Oil Study. Interesting results indeed.

Posted
comment_582173

Well someone in 2017 did a pretty well designed study on 10 of these new fangled high ZDDP oils intended for old classic cars such as ours.

I know we have discussed this in the past, don't remember if we referenced this study before. My apologies if so. 

Results were surprising to the author. Hopefully it will shed light on the current "hype" on this topic and perhaps result in fewer scarred cams and rockers around these parts.

https://onedrive.live.com/?authkey=!AHKKfKJ3E11RU1E&cid=FD59A041A3808BD5&id=FD59A041A3808BD5!1416&parId=FD59A041A3808BD5!207&o=OneUp

Note: This contribution originally posted by a well known Z owner, Chickenman, on the510realm. http://www.the510realm.com/viewtopic.php?f=30&t=31832

    • Like 2

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    comment_582206
    Any thoughts on how this study applies to rebuilt engines?  Is this study just pertinent to older, non-rebuilt engines?  Just wondering ...
    Rebuilt engines need the zddp protection more if anything. Older engines I think may have a degree protection from work hardening.
    • Like 2
    comment_582621

    I found this very interesting. The good oils in this test are expensive in the UK, if available at all, but it at least gave me values for zinc and phosphate levels I should have. (1400ppm+)
    I recently bought some eastwood additive and so looked it up, and it seems to have the right sort of amounts for a Z sump full.

    https://www.eastwood.com/ew-zddp-oil-additive-4-oz.html

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