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New car with only a couple hundred miles on the odometer, all city driving and very short highway trips so far (lots of RPM ups/downs).

Gotta take it on an eight hour (each way) trip to visit relatives for X-mas.

What suggestions do you all have for breaking a car in properly while driving on the highway?

Last time I did anything like this I was driving a car from TN to PA and just wound up varying speed every few minutes by going, say, 55/75/60/75/65/55, and switching it up. Not the most fun way to drive for hours.

Thoughts?
 

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My salesman said don't worry too much about the "break-in" period (nice choice of words there eh?) after 200 miles. Just to be on the safe side you should for at least the first 500-1000 miles on a long trip travel at varying speeds every 2-3 miles (50/60/70/60/50) or something like that making sure you don't keep the RPM's at the same level for a long period of time.

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I completely ignored the break-in period. Floored the car to the max from about 50 miles onward, exceeding 90 mph. Engine seems to be running great, and all was well at 1000 mile check-up. I think they do that just to deter defects or something?

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-IStheBest-
 

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I wanted to pay attention to the break-in, but the car demands to be driven. It is tooooo hard to stay out of the accelerator. Plus I commute 30 miles to work everyday and staying under 55 is impossible (and would be dangerous as hell). I can say that I have not red-lined it yet (probably 5500 RPM max so far).
 

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I passed a yellow IS 300 on I 81 yesterday was that you?

Do not worry about the break in period, They say that so you will not run the hell out of it when you leave the dealer. If they put the motor together correctly it will be ok. Besides new motor are not near as "tight" as old motors use to be. that and the sales people and clean up guys run the crap out of them anyway.
 
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