Expire is not really the right term; but effectively yes. In general a cheque older than six months will be considered stale-dated and will not be honoured. Reference the Canadian Payments Association FAQ.
SKYACTIV is a brand name for a series of technologies developed by Mazda which increase fuel efficiency and engine output. The initial announcement of the SKYACTIV technologies include new engines, transmissions, body, and chassis, which appeared in Mazda products from 2011.
AMD SKY Technology. âAMD SKY technology powers the ecosystem that enables AMD FireProâ¢ S-series server cards and AMD Radeonâ¢ Sky series graphics cards to be used to power Visual Cloud applications in both commercial and consumer workflows.