Just some info on the filters...there is no pressure in the Steiners system..it's in a vacuum, the pump sucks fluid thru the filter. The stock steiner filter is a 10 micron...it is a good filter but it's not necessarily the best micron rating. The 10 micron is more restrictive especially in cooler weather, since the pump sucks thru the filter it's very important.The 25 micron filter is less restrictive on the hydraulic pump, and will improve performance and reduce noise slightly. Also 25 microns is what Sunstrand recommends ..So I recommend an aftermarket filter with a 25 micron rating..the only time I use the 10 is right after the system has been open, I would run it a week and switch to a 25.We use Zinga filters.My Ventrac/Steiner dealer is who told me about this many years ago...We use an AE25, it's about 7 bucks...