L469 YVK 22 Oct 2020, 5:16 pm #793 L469 YVK L469 YVK L469 YVK Posts: 3826 Threads: 58 Joined: Apr 2014 Reputation: 0 RE: New StreetDecks & ADL Enviro400s - X-lines fleet changes (22 Oct 2020, 11:24 am)ne14ne1 wrote Sound of the 6 cylinder: Sounds like a cross between a DAF DB250 and a Merc! For the purposes of fuel economy, would these be considered light, mid or heavywight? Reply