Container for storage of waste oils compliant with the Italian Legislative Decree n. 95 of 27 January 1992, with the Italian Ministerial Decree n. 392 dated 16 May 1996 and with the European Directives 75/439/CEE and 87/10/CEE, regarding exhaust and waste oils disposal. Made of roto-moulded high-density polyethylene, these tanks have high mechanical properties, high impact strength, and also thermal, chemical, UV rays and adverse weather conditions resistance.