If were traveling and going to many different stations, I will go buy the recommended change on both the main and water separator. If i stay around home and use a station that i know has good clean fuel, i will change the water separator filter every other time. But will change the main filter everytime as recommended at around 10% life left.
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2017, 3500 Ram Big Horn, 4x4, Crew Cab, DRW, Aisin Transmission, 4:10. Curt Q20, 2014 Mountaineer 331 RLT, Sailun's on the rv and truck.
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