Are we saying that Synthetic holds particulates in suspension better than Conventional? Sincerely interested. Interesting thread.
Originally Posted By: OVERKILL
Those numbers don't correlate directly to actual wear though, to be pedantic. An oil that kept particulate in suspension better than another is, by definition, going to show higher levels of that particulate when sampled. Just as an example as to how that can go wrong. Used oil analysis is not a tool designed to measure wear, simply one to measure the life and condition of the lubricant and check for contamination. Controlled tear-down testing is the proper tool for measuring wear.
Originally Posted By: Nederlander75
OP, Blackstoe compiled a good bit of data a couple years back that revealed that conventional 5w30 did, in fact, provide lower wear metal numbers over the sampling of their database than all synthetics except Amsoil. However, that oil was barely in front of good ol GTX so for the $ it was quite profound that conventional was far and away the better choice for most drivers.