Originally Posted By: goodtimes
People may get wrapped up in the multi pass test numbers too much. It's almost a disease.
As far as engine clearances changing with temperatures and loads, it's not going to change the fact that more particles in the oil means more wear due to particles being caught up in tight clearances. Not sure what your point was there.
So what else are you going to use to compare filtering performance besides the industry accepted ISO multi-pass efficiency test?
If you followed the discussions about engine wear vs filter efficiency, you'd see in the SAE bus study that the filters that rated the highest in the multi-pass test were the filters that resulted in less wear particles and therefore less engine wear.
People may get wrapped up in the multi pass test numbers too much. It's almost a disease.
As far as engine clearances changing with temperatures and loads, it's not going to change the fact that more particles in the oil means more wear due to particles being caught up in tight clearances. Not sure what your point was there.
So what else are you going to use to compare filtering performance besides the industry accepted ISO multi-pass efficiency test?
If you followed the discussions about engine wear vs filter efficiency, you'd see in the SAE bus study that the filters that rated the highest in the multi-pass test were the filters that resulted in less wear particles and therefore less engine wear.