Other than burning up the motor due to lack of oil, none. Seriously the engine needs to be in operation to pump the oil to lubricate the engine and the transmission. If the engine is turned off then the oil will not circulate and you will damage your transmission gears even in neutral.

07 Speedmstr, Long Tors, bags, sissy bar and rack, windshield, engine bars, 2 ww lights, 2 fast eddy stickers and a .45 ACP.