Engines
All engines must be drained with pans off and filters removed.
Fluids
All units containing fluids, such as oil, hydraulics, transmission fluids, gases, etc., must be properly drained.
Propane Cylinders
Valve stems must be removed from cylinders and preferably a hole punched in the cylinders.
Tanks
Any tank other than hot water tanks or water pressure tanks must have a large hole cut into each end of the tank for visual inspection.
Transmissions
All transmissions must be drained of fluid, pans off and no torque converter.