On 7/11/09, changed the oil in my Toyota Sequoia, 08, 5.7L, at 15,000 miles. Dealer had done it twice before, so I thought I'd give it a try. I used Valvoline conventional 5w20, bought in gallon jugs. I ran the car up on some 2X12's to get it up a little to help in removing the skid plate. I...