I've just bough a new 2011 plate car. I've heard stories of people 'burning in' engines for the first few hundred or couple thousand miles using methods such as:
- Not driving above 50 mph.
- Varying the revs more than usual throughout the entire range.
- Keeping the revs below 3.5k.
I've also heard that modern car engines are broken in at the factory, and the above is complete rubbish.
Is 'burn-in' necessary on modern cars? If so, how should I 'burn-in' a new engine?