you ABSOLUTELY should oil your filter. putting it in a bag and shaking is wrong. I like soak style better than the spray style oil because it's easier to get theboil down into the filter. I have ridden and raced and worked on motorcycles, 3 wheelers, 4 wheelers and SxS for 55 years. most paper filters for your 4 wheelers are designed to be oiled. there are different types of filter oil for foam and paper filters. when cleaning your filter do not use gas, it will eat your filter. I recommend using oil filter cleaner. it is a little more expensive but works a lot better. cheaper than a rebuild.