martin_wExplorerJun 03, 2013gm 8.1 engineI have 2006 fleetwood flair with 6000 mi need to add oil about every 900mi . I see no leak on the ground or gray or black smoke. Wayne
boatlessExplorerJun 04, 2013I have an Itasca with the 8.1 Vortex, 47,000 miles. It uses about one quart of oil every 1,500 to 2,000 miles. Normal for this engine I believe.
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