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Old 01-13-2016, 07:36 AM   #3
JFP in PA
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Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,273
I would guess that you did not submit a virgin sample of DT40, otherwise you would have observed that this product is a different animal.

The Gibbs formulation does not depend upon several of the suspension and dispersion aids that your other oil needed simply to stay together, so its balance of elementals appears different. Gibbs runs high levels of ZDDP, the best anti wear agent ever used in oils, your former oil was using different wear additive packages and much less ZDDP (if any at all), which require the dispersion aids just to stay in suspension, which is where a lot of the differences come into play.
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