Treacherous \Treacher*ous\, a. [See Treacher.] Like a traitor; involving treachery; violating allegiance or faith pledged; traitorous to the state or sovereign; perfidious in private life; betraying a trust; faithless. [1913 Webster] Loyal father of a treacherous son.
Fuel Safety Tips. 1  If you need to transport fuels such as propane, gasoline or oil, it should only be carried in approved containers certified by agencies such as the Canadian Standards Association or Underwritersâ Laboratories of Canada. 2  Containers should never be filled right to the top.
Features Gates Gas Caps. 1  Standard fuel cap range includes locking and non-locking caps. 2  Caps can have two different breathing systems: vented or non-vented. 3  A non-vented fuel cap is recommended when your fuel tank is ventilated through the filler neck.