5W30
5w305w30
5w30
yes
5w30
5 quarts
13mm
5w30 conventional or synthetic.
5W30
5 W 30
5w30
It uses 5W30 conventional.
The kind of oil that is recommended for a 2003 Toyota Highlander is 5W30. The brand isn't that important, it is just important that you use the correct weight for your vehicle.