But the greatest cost was one that blindsided us: Diesel exhaust fluid (DEF), which must be replenished to keep the Td6 engine's emissions system working. See All 91 Photos When the Disco first ...

I think I’ve become very genre-fluid!” Urban said with a laugh ... but was most notable for Urban’s collaboration with disco impresario Nile Rodgers and feature-rapper du jour Pitbull ...