ACLOs were specially pervasive in Argentina, Uruguay and Brazil. Particularly in Uruguay, there were two ACLO fleets. They were interesting buses, quite faster than Leyland Tiger in use by other fleets. It was said at the time (early '60s) that the main reason was inter-urban gearing instead of purely urban gearing present in Leylands. An interesting feature was preselector gear-change, similar to those in Leyland buses, commanded by a smallish gated lever installed by the steering wheel, with a reversed gate, with first gear to the right and up, and fourth gear to the bottom and left.