I believe every motor is broken in properly when it is assembled, every motor built gets tested for compression, and to make sure its making the correct power. But im sure more time is usually need to get fluids coated on the internals, but its like people who warm up their car in the morning and the people that dont. i do, but it has been said that modern engines dont need to sit and be warmed up, and thats it more waste of gas than good.