Hello all! I just finished a 3700 mile road trip with the family in my 4 Runner. The drive was great and the truck ran perfect! My question to all of you would be the consumption of M1 on this particular trip. I used just about 1 quart of M1 during the trip. The oil was topped off as soon as the oil level reached 3/16 or 4mm + - below full line. There was 1000 miles on this oil interval before the trip consisting of 95% stop and go city driving. No oil was added in the first 1000. The 3700 miles consisted of 98% highway miles traveling on average 70-75 MPH using cruise control. Is 1 quart M1 used in the 4700 mile interval high? Should I change this oil now? All feedback, complaints, insults, etc. are welcome! Thanks Daily Drives -2003 Toyota Tacoma PreRunner XtraCab, Impulse Red, Peppy 2.7 Liter 4 Banger, Running Mobil1 Synthetics SS 5W-30. ODO 4300 Miles. -1995 Toyota 4-Runner, Evergreen, 3.0 V6, Running Mobil1 Synthetic SS 10W-30. ODO 80500 Miles.