Guys I don't want to make anyone mad or anything, but I have to disagree with that a little bit. Now I know this is the exact advice 100% of engine builders give out and I have to say it's the same technique I have used on my cars in the past, but here's a little something interesting.STi_Thunder said:To ensure a good break-in, just make sure you vary the engine speed. Don't use cruise control or maintain steady speeds for prolonged periods of time.
I'd better follow the manufacturer's spec for break-in as well. Hondas are built different than Subarus. Either way, I'd still say that Honda will, in their manufacturer's manual, recommend varying the engine speed anyway...JRSCCivic98 said:I have had 2 friends so far that have broken their cars in on highway milage alone at constant speed. One was making trips here in the US and the other was driving to work and back super fast on the autoban in Germany. Both cars were Hondas (but that shouldn't matter). One was a GSR and the other an Si. With that being said those 2 cars alone where 2 of the fastest cars I have seen run at the track with a perfectly stock motor internally. And I don't mean just slightly faster... Both cars also had very nice acceleration throughout the RPM band as well.