Re: Engine Temperature needle
That's quite normal. Mine's exactly the same, sits just about 90 in traffic, otherwise it sits in the 70s when cruising and gradually edges up to 90, before dropping quickly back down to the 70s again. Most of the time that happens pretty fast, it doesn't hang around long at the higher reaches when you're moving freely, so unless you've got your eyes glued on the needle (rather than the road!) it might look as if it's almost always in the 70s. I've had my thermostat and sender changed and it's still behaving the same. It was pretty obvious when the 'stat needed changing as it was running about 10-15 degrees cooler and never getting far above 75.
Just a word of advice: I got my 'stat changed at a main dealer, and they charged a pretty hefty whack, I'd shop around if you ever do need to change it.