I dug out an old composition notebook, and got it started. Used a razor, cut out the used pages in the front. Turn it over, spin it around, and from the back forwards, the notebook will be used to monitor maintenance of the I30t, Yukon XL, and Grand Am.
From the front backwards, the normal way, it will log the maintenance of my G35x. The separation is because my G35x now has an extended warranty, so somebody else might someday want to see the maintenance log. Nobody will want the stuff for the previous three cars.
183k, 108k, 104k, and 70k.
My first oil change will be around 73-74k miles.