I agree - break-in, even on a freshly unwrapped engine, takes 20 miles or less...and you hammer the piss out of it.Originally posted by JimmyNY
'Breaking in' cars doesn't do ****. You don't have to change your driving habits when you get a new car. The only thing that takes some time to adjust is the ecu, which doesn't even need that much time.
I've broken in at least 6 new cars (NissanBMW 3 series and M's, Audi S4, now the Scooby). I hammer the mo-fo right off the lot. Drive the car how you intend to from the start. I've never had a problem. I put at least 50k miles on each car I own.
Of course, warm up your engine and fluids first. I always use full synthetic (Redline).
I've now got 18k miles on my WRX, it's broken in nicely, pulls harder and smoother from 5k on up to 7000. Quite a different car up top than with 0-10k miles on it. I was running 15psi at 800 miles.
A 1000 mile "break-in" is more for the driver to get use to his/her machine than anything else.