Turtle wax is probably the problem bud
Wax is great for keeping the car clean too, so much easier on a rewash when the car is nicely waxed. Really good to wax your wheels too...my rotas look brand new still and are a doddle to clean.
On any car I would say you need to warm it up....from a 1 litre Yaris to an Enzo. Definitely worth sticking too bud.
Engine, coolant and oil need to get up to optimal temps before any major stress.
60mph in 6th on the motorway....you guys must have a lot of patience! I try to be sensible but usually only lasts a junction or 2!
O and if you want MPG out of your Z get an UpRev I now get a consistent 2 mpg more since I have had it done...will pay for itself! That's what I told the Mrs anyway.....
EDIT - I was just sad enough to work it out and I have saved £170 in a year on petrol since the UpRev. This is using the in car average calculator and comparing 24 to 26mpg over 9000k a year.
So in 2 and a half years it will actually pay for itself
When I got pulled three years ago for an illegal plate I got let off the fine as I was carrying legal ones in the car and could apply them there and then.
Not sure if he was just being nice!