Fuel wator separator filter???

[Lonestar10]

some older cm871s had spin ons a 2008 9900I i was looking at before my lonestar had one.. i prefer the davco for visible inspection of plugging tho and would have installed one. as far as fuel just go where they sell alot of it if you goto a place that hasn't had to refill its tanks in months it can get water saturated. as far as biofuel its basically by state Minnesota is 20% in summer and i believe 5% in winter.