Jonas wrote
>
> Walt Wayman wrote:
>
> > Until it's properly run in, I won't be smoking any asphalt, and not often
> > even
> > then.
>
> Walt, you do know that to get the most from your engine, running it in
> means driving as hard as possible?
>
> If you run an engine in carefully, not revving much or loading it heavily,
> the bearings will not be freed up properly and you will not get maximum
> power from it, and your fuel consumption will be higher.
>
> I used to work for Volvo programming fuel injection systems, and when we
> needed a test car with low emissions and good fuel economy, we used to
> send it out to be driven by people we knew drove really hard. Most people
> there drove like lunatics, so the fast drivers were people you did not
> want to ride with. Also we could put an engine in an automated bench for
> running in, and the running-in programme used to consist of mainly running
> at between 3000 and 5000 rpm and between 70% and 90% of max torque or
> something, with short periods of lower load to let it cool down every now
> and then. Three days or so of that would be about enough. The exhaust
> headers would be red hot a lot of the time.
>
> So y'all get out there and burn that asphalt, if you want to be nice to
> your car :-)
>
> Jonas
It is folk wisdom here that if a new engine is run in too gently the cylinder
bores will get polished too smooth and the engine will always burn excessive
oil as a result.
Brian
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