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Those tests can tell you when the oil has broken down and no longer provides the same level of protection as new oil. That way you can establish your own change interval with data to support it. No one that I have read about is looking at those charts and checking for engine damage but I suppose if you wanted to get technical you could.


A lot of those guys on BITOG are doing it just as much as anything to see the wear metals and what not. They are doing it for all of the info, sure some are doing it to see how much their oil has left, but my impression is many are doing it to see if there is a coolant leak or any engine abnormalities.

marc

99 rodeo 4x4 v6 80,000 miles
My Rodeo