Yes I know there are a million threads on this but I have one that goes into alittle more detail. I decided to try a Mobil M1-108 oil filter from the Polaris filter. Well I took the Polaris filter off and wanted to compare it to the new Mobil filter. Now the Mobil filter is just a hair shorter then the Polaris filter. Why is that ? One last question is the Mobil Filter says high performance oil filter and I set them side by side and one difference I noticed is the Polaris filter has 8 holes for oil flow compared to the Mobil filter one which only has 6 holes. Now has anyone noticed a difference between the two or could you even tell a difference ? I ran it of course and could not tell any difference compared to power.