The CL if fitted as std by ford should work, unless it is mentioned that it doesn't, try to get a few £'s back instead maybe, I always worry when they are forced to do a job they don't want to, how they will treat the car, I have known one case years ago where a rsehole YTS/trainee put a certain substance in the oil/engine, 30 miles later it threw a rod, owner could never prove it, was a ford garage, I know this happened as I rebuilt a new engine for him.
tabetha