This is a discussion on Breaking in a new WRX engine within the Everyday Impreza Talk forums, part of the Community - Meet other Enthusiasts category; Originally Posted by jwongx27 wait i was looking thru manual. It doesn't say anything about breaking it in properly. Your ...
It is unlikely you will have issues.
One reason the expert opinions and associated mythology about break-in persist IMO is that most modern motors do OK despite, not because, of the advice...
I tend to follow manufacturer instructions since I'm vested in trusting them -- after all I have already given them thousands of dollars, trusting their car will hold together. May be faulty logic, and may ignore vast manufacturer conspiracies to reduce their warranty claims without regard for longer-term longevity (this is a not infrequent criticism of trusting the manual...) but it has worked OK so far...
Kk thanks I saw a lil thing saying 1,200 miles on page 11 or 10 for maintenance
The instructions for mine only said to vary RPM, not use cruise control, and stay below 4K. You should be fine since tis is all feasible on the freeway.
Hit the rev-limiter every other shift, try to make many short distance trips, and don't forget to rotate your oil and replace your muffler bearings often.
Or, you could do what SD_GR said. To each their own.
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