i run it in according to the book for the first 1,000km. from then till 15,000km i don't redline or anything. that's what i've done with my levin..and it's working great. plus..i do every 5,000km service. change oil everytime with synthetic... rotate, balance and align all 4 wheels each time. it cost me a fair bit per service..but it's peace of mind for me. Yes, i admit, i'm padantic....but i don't care...i feel better! :P :P :P :P