I have another question. My 4.6 seems to sometimes seem to sort of keep hesitating going into top gear between 4 th. and 5th once you put the boot down more it goes in spot on I have always had diesels and this is my first petrol and I was wondering is this the way the petrol is that u just have to drive it harder and sometimes it can go back into first hard I not sure where to look first or just live with it