Last post on Jul 24, 2002 at 10:13 PM
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#16 of 18 How do you know when the engine's broken in?
Jul 22, 2002 (9:35 am)
The prizm is a 4speed automatic. and yes the sticker says 40mpg highway. i'm using the manufacturer recommended octane (87).
it's now at 1000 miles (basically another tank of gas), and I'm still at 32mpg at 95% highway.
How does an engine "break in?"
Jul 23, 2002 (1:54 am)
The piston rings seat in and conform to the shape of the cylinder walls.
#18 of 18 substantially broken in at 500 miles
Jul 24, 2002 (10:13 pm)
or at least that's what Ford wants me to believe, I seem to remember that they do "remind" the new owner to continue to take it easy for something like 1500 miles total.