Originally Posted By: Steve S
How does oil saturated cellulose suck moisture 'water'
I remember how DalesS2 on JeepsUnlimited installed an oilguard filter several years ago and showed how it removed all moisture in his oil after many cumulative analyses with different full-flow filters on the same oil. The moisture gradually increased with each full-flow filter change, but when he installed the OilGuard filter, it removed all the moisture.
I assume that it happens because cellulose is made of organic cells, which are designed to absorb moisture. Being saturated in oil doesn't prevent them from absorbing water.