I'm having trouble of an overheating kind. Around town the temp stays fine, but steady speeds on the motorway causes the beast to overheat. I've had the viscous coupling on the fan changed and the thermostat seems like its opening as the pipes both sides of the engine get warm.
If she gets hot on a run the only way to cool her back down is to take your foot off the throttle for a couple of seconds at a time - so its accelerate, foot off, engine braking, accelerate - not much fun for anybody following.
Any ideas much appreciated.