Tugs are used to haul jets in and out of gates. The majority of the tugs operating at SFO run on diesel fuel, spewing pollution into the environment. While there’s been a gradual switch to ...

they decided to start with a 1990 Dodge diesel truck. The truck started out as a retired airplane tug, but was transformed into a trail-slaying adventure machine. On episode 34 of Dirt Every Day ...

The tugs are used to push barges filled with lumber ... The company says it was warned in the late '90s that diesel fuel prices would jump from 43 cents to $1. When diesel climbed to nearly ...

Wilson Sons received approval from ANP to conduct the first tests on using HVO (Hydrotreated Vegetable Oil) in the Brazilian maritime ...