When I did my 99 I used the 1" hose that goes from the bottom of the recovery bottle to the bottom tank of the radiator to drain it. It's easier to control then the larger hose to catch the used coolant. I replaced all the hoses and thermostat at the same time. The engine block will still contain some coolant. To get it out, it can be done two ways, 1. Refill with DI water run the engine till the thermostat opens, let it cool and drain, I did that twice. 2. If your replacing the thermostat flush the block with a hose while the thermostat is out. I don't like to have tap water in my engine so I always flush it with DI water. The block will have DI water in it so I use concentrated coolant for refilling.
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1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000,1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.
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