It only manifests itself on the motorway, when the engine is under load (trying to keep speed on hills, or accelerating on teh flat etc) and completley ceases when the gearstick is held against the side. I've tried retarding the ignition, so I don't think it's pinking, and the gearstick thing suggests it's not too.
Gave the car it's holday oil-change and service, checked the engine steady was tight - rattle is still there. Wondered if anyone had any ideas?
(Still haven't fixed the rattle on the other car
