Quote:
Originally Posted by mmartahus
u redlined a car on a test drive?? I hope it had more then 1000 or even 500 miles?
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I sure did. Drive it off the trailer, and its broke in. I also bought that same car, so I am putting my money where my mouth is.
This theory is not based on gibberish. It is based on the fact that the sooner the engine is broken in the better. What is more important than being gentle, is variation of rpm, and decelerating as well as accelerating throughout the rpm range, and avoiding prolonged periods of steady rpm operation.
The reason that manufacturers have some other recomended break in procedure, is that they operate on the theory that most consumers are to stupid to understand things like ring seating, cylinder wall glazing, bearing wear in, gear face hardening etc. Rather than explain all of that, they just tell you to take it easy on it, and figure that every day normal driving, will take care of the rest.
That being said, if you have an engine rebuilt, break it in the way the builder tells you to. Rebuilt is not the same as manufactured (Usually). However, when I built engines for people, I told them to drive it like they stole it, and change the oil after the first 100 and 500 miles or so, and no synthetics till after 3k. (Though I do wonder what exactly Mitsu puts in their cases, since there is a mobile 1 decal on the engine)