I've change my own oil for 30+ years and have never been more confused. I've read the oil capacity for the FJ is 6.4 quarts and also 5.5 quarts when changing oil and filter. I changed the oil and filter with Amsoil 5W-30 and ea057 filter and added 6.0 quarts but can't get a clear reading on the dipstick and now I am afraid I have over-filled it. From those with experience, what is the actual oil capacity when changing the oil? If it should only be 5.5, do I need to drain half a quart to be safe? Thanks!