WayneandAnna
Thread starter
I measured the distance between the "Add" mark and the "Full" mark on the dipstick. The distance is 1 and 7/16 inches (my long, long time hobby is woodworking). When the oil in on the "Add" mark with the vehicle level the addition of one quart brings the level up 1 inch on the dipstick. Also, when the Toyota Dealership did the oil consumption test, they very carefully filled the engine to exactly the "Full" mark on the dipstick. After 1,400 miles, the oil had fallen to about 1/3 down the dipstick and the dealership carefully measured the amount of oil to bring it back to full and that took 1/2 quart by their measurements. This supports my 1 and 1/2 quarts assumption.