Toyota recommends SAE 0w-20 as the best choice for your Highlander in cold climates and for fuel economy. You can use SAE 5w-20 but it is not the best choice. You can only purchase SAE 0w-20 in a Synthetic Oil so you can extend your oil/filter change interval to at least 7,000 miles or 10,000 miles if you drive mainly highway miles. Do not use any other weight oil.
The weight of the motor oil should be 5W30 or 10W30.
The curb weight of the 2009 Toyota Highlander is 3847 lbs..
The curb weight of the 2002 Toyota Highlander is 3485 lbs..
The curb weight of the 2010 Toyota Highlander is 3845 lbs..
The curb weight of the 2003 Toyota Highlander is 3485 lbs..
The curb weight of the 2004 Toyota Highlander is 3520 lbs..
The curb weight of the 2013 Toyota Highlander is 3946 lbs..
The curb weight of the 2011 Toyota Highlander is 3946 lbs..
The curb weight of the 2014 Toyota Highlander is 4134 lbs..
The curb weight of the 2008 Toyota Highlander is 3979 lbs..
The curb weight of the 2007 Toyota Highlander is 3516 lbs..
The curb weight of the 2001 Toyota Highlander is 3485 lbs..
The curb weight of the 2005 Toyota Highlander is 3520 lbs..