i'm the proud new owner of a scag mower. the hydraulic system requires 20w50 motor oil and has a filter that is a 10 micron filter, part no. 48462-01. the filter's msrp is $25!! i'm a long time away from replacing the filter (needs changing once a year), but i'd like to find a replacement that i could get off the shelf somewhere for less than the msrp.