Changed the oil in the Highlander today. Doing it 2x a year now, once in the spring, and once in the fall, regardless of mileage. Last year I did oil analysis, and at 15-17K I'm still well shy of the oil needing changing. About $70 in Amsoil Signature full-synth and an Amsoil filter - cheap for premium goodies. Tomorrow the Corolla gets the same treatment.
Gave the HL a once over while I was under it, and all looks good. In the spring I'll crest the 300K mark and it will get a bunch of stuff done. Hard to believe that I'm coming on 300K - she only had 145K when I got 'er. Timing belt, plugs and some other stuff at 300K. Nicely, all those things were done by the dealer prior to my taking delivery. It got a new battery, timing belt/water-pump/etc, windscreen and major service (plugs, coolant, fluids) at 145K, and then I'd done interim work, and now at 300K she'll get a bunch of stuff again. Cheap driving. Really cheap driving.