My driving habits are mainly city driving and idling. Of the 10,901 miles, 10K were under 35MPH approximately. I do lots of idling as well. During winter months, it's not uncommon for me to let the RAV4 warm up for 5-10 minutes before leaving, and then a couple of hours idle time throughout the day. I'd say that my city/highway average is 80/20. QSUD has become my go-to oil for this vehicle, and with the results, I won't be making a permanent switch for some time to come. I do have another change worth, and some German Castrol to use, as well as some old Havoline SM formula sitting around that I need to use, plus some Amsoil. I am trying to wear my stash down a bit before I buy any more.