The invention relates to the wheat cultivar designated XY06-852. In the exhaust component cover, an internal plate is formed by bending part of a single plate at both ends, and the internal plate is joined to the inside surface of an external plate. A sensor and associated microprocessor are provided to determine the change in the height of the liquid in the riser tube at plural points along the length of the tube from which the viscosity is calculated. The rocking element includes an upper end and a lower end. The cover may be made from certain ceramic materials and shaped as a thin plate.