Jen, one thing to be aware of, keep in mind, and tell hubby. There is no keeping secret your shifting habits. The time the engine spends in the various RPM ranges is recorded by Nanny and she tattles to the technician when he hooks up BUDS. One of the bits of info that is shown is a histogram of the time the engine is run in the ranges of 0-2000, 2000-4000, 4000-6000, 6000-8000, and over 8000. If the graph shows a lot of time in the 2000-4000 rpm range, and not much above that, you, or hubby, very likely will get an
chewing!
So, don't shift until you are above 3600 - 4000 rpm. Below 2000 rpm will most certainly be just idling time. But here again, if the 0-2000 graph is high be ready to be chewed out.