bill67 wrote on 08/11/09 at 12:19:33: I don't think the metal on the magnet would mean anything a newer motor would have more,I think a dyno test to see which put out the most horsepower would show which had the less friction.
Of course the test would be done well after break-in, so the engine wouldn't be sloughing metal left and right. We are also talking about two consecutive 1000-mile intervals.. probably not much difference due to age.
verslagen1 wrote on 08/11/09 at 11:42:48:Good suggestion, however, aluminum is non-magnetic.
I suggest that we take stock filters only, add the OF super mag mod, soak the filter in oil for 24 hrs. then drain on its side for 24 hrs. Then weight. Put in bike, run for 1000 miles, remove, drain like before and weight.
Not totally 100% as captured dirt will weigh in. But better than trying to pick aluminum dust out of the filter.
Yeah, the magnet doesn't catch the aluminum, so you would have to assume that the wear on the aluminum parts is in proportion to wear on the steel parts. By the filter-weighing method, the assumption is that contaminants like dirt and clutch plate material don't overwhelm the weight of metal due to engine wear.
OldFeller shall decide which assumption is best, haha