I know when i get my car back i need to run the engine (rebuilt) in but how many miles do i need to do and can it be done all at once?I remember my mum bought a brand new corsa a few years ago and took it from the dealers to liverpool and back to run it in but is it safe to do something simlilar with an impreza,any advice greatly appreciated.

 

500-10000 miles , rev under 4k ,