I've come to the conclusion that a proper break-in involves putting the motor under load withing the first 10 minutes of start-up. From everything I've read it seems this comes with the most success and least side effects (glazing from idling too long or revving without the car under load). Question is how do you do this without having to wait for the thermostat to open and let all the coolant flow through the system? The car has to get up to temp for that to happen which would require idling or revving a bit no?