Every time I've looked at that study, I've noticed that the diesel engine filters go down to 7 microns, while the gas engine filters only filter down to 98% efficiency at 15 microns. It also appears that wear reduction for the gas engine flattens out around 25-15 microns (in face, the 25 micron filter has less wear on the upper main than the 15 micron filter). But for the diesel engine, wear is reduced down to the 8.5-7 micron level.
Are diesel engines more vulnerable than gas engines are, to smaller particles? Or was this just these two particular engines studied? Or am I missing something here?
Are diesel engines more vulnerable than gas engines are, to smaller particles? Or was this just these two particular engines studied? Or am I missing something here?
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