There is some good info in the owners manual you can read once you getWhen you say vary the rpms, how much variation do you mean? during the first 1000 miles can you use it on the highway for a long trip as long as you do not use the cruise control?
your vehicle. I think the break in period is only 600 miles. I did it for 1K
just to make sure. To answer you question, yes, you can drive on the
freeway for extended periods of time, just vary your speed. Go 60 mph
for 5 minutes, then go 70 mph, then go 65, etc etc. It wont be difficult.