Quote:
Originally Posted by swamp2
Should one be encouraged by a wear element decreasing when the mileage and oil are both changed compared to a baseline? This is a classic changing of too many factors to determine what is causing the change. In general wear elements, if being created on any sort of regular basis, will increase constantly with mileage.
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You can still measure if wear metals are decreasing over a specified period
If you used one oil and changed every 8k miles and then switch to another oil and change every 4k miles you can still see a trend and compare.
i.e. if you change TWS at 8k miles with a lead reading of 15ppm, switch to M1 and change every 4k miles with each lead reading being 2ppm I would say its obvious that wear metals decreased.
I know you are very academic about everything but you may be over thinking this one.