Abstract: A process for manufacturing a diesel tank or filler pipe by an extrusion-blow molding machine configured to manufacture a gasoline tank or filler pipe. The extrusion-blow molding machine includes a coextrusion head including at least one extruder configured to provide during a first period of time a first material that is a barrier to liquids and/or gases, such that during the first period of time the coextrusion head produces a first multilayer parison from which the gasoline tank or filler pipe can be manufactured. The extruder is further configured to provide during a second period of time a second material distinct from the first material, such that during the second period of time the coextrusion head produces a second multilayer parison from which the diesel tank or filler pipe can be manufactured.

Abstract: A process for manufacturing a diesel tank or filler pipe by an extrusion-blow molding machine configured to manufacture a gasoline tank or filler pipe. The extrusion-blow molding machine includes a coextrusion head including at least one extruder configured to provide during a first period of time a first material that is a barrier to liquids and/or gases, such that during the first period of time the coextrusion head produces a first multilayer parison from which the gasoline tank or filler pipe can be manufactured. The extruder is further configured to provide during a second period of time a second material distinct from the first material, such that during the second period of time the coextrusion head produces a second multilayer parison from which the diesel tank or filler pipe can be manufactured.

Abstract: Manufacturing method for impregnating with lubricant a porous bearing material retained in a bearing retaining cavity in a bearing retainer. Under a reduced-pressure space within a vacuum chamber, a bearing structural unit in which a porous bearing material is retained in a bearing retaining cavity in a bearing retainer is, with an opening in the bearing structural unit directed down, immersed in or contacted on lubricant to cover over the bearing-structural-unit opening; by then restoring chamber pressure, the porous bearing material is impregnated with the lubricant. The manufacturing method controls to a minimum adhesion of lubricant to the bearing-retainer exterior, to eliminate as far as possible the trouble of lubricant cleanup, and at the same time makes the impregnation of the porous bearing material with lubricant more sound and facilitates the impregnation job despite its being under a reduced-pressure atmosphere.