Streetlite on the R2 sounding like it's about to blow up (WS5 LJ12CGU)

Описание: The usual. 3-speed Streetlite trying to climb a 12% hill then going down an open, hilly 40mph road whilst sounding like a cat's being strangled in the engine bay.

This bus was serving route R2 to Orpington, Walnuts Centre. How these even get on the route in the first place, I've got no idea.

Operator: Go-Ahead London (Metrobus)
Fleetnumber: WS5
Registration: LJ12CGU
Chassis/body: Wright Streetlite WF
Gearbox: Voith 3-speed