Can I service my Ford Ranger with a different mechanic and keep the warranty cover?

Your mechanic is spot on. As far as the warranty laws in this country are concerned, there’s no difference in having the vehicle serviced by a Ford dealer or by a qualified independent mechanic. If there’s a problem down the track, it won’t matter who serviced the vehicle; a warranty claim is a warranty claim. Your peace of mind should be no different either way.

The only difference might be if Ford looks more favourably upon your case considering you’ve been a loyal customer and had the servicing done by your dealer. But don’t go to the bank on that, as it’s by no means a legal requirement, nor a widespread occurrence.