2007 Red Std. (#7 package) Prius, 12,600 miles on vehicle, 6,00 on this oil. First oil change was at the dealer at ~6000 miles.
When the maint. req. light came on I got around to changing the unkown dealer oil at 12,600 miles - so the oil had around ~6000 miles on it. I put in Mobil 1 5W-30...