According to the 2009 Lincoln Navigator Owner Guide :
The Navigator L has a ( 33.5 U.S. gallon gas tank )
The gas tank on the 2009 Lincoln Navigator holds 28.0 gal..
According to the 1998 Lincoln Navigator Owner Guide : ( 30 U.S. gallons )
A ( 2007 ) Lincoln Navigator is 106 liters / 28 U.S. gallons
it can hold up to 28 gallons ==================================================== It depends on which MODEL YEAR According to the ( 1998 ) Lincoln Navigator Owner Guide it has a ( 30 U.S. gallon gas tank )
The gas tank on the 2003 Lincoln Navigator holds 28 gal.
The gas tank on the 2013 Lincoln Navigator holds 28.0 gal..
The gas tank on the 2007 Lincoln Navigator holds 28.0 gal..
The gas tank on the 2014 Lincoln Navigator holds 28.0 gal..
The gas tank on the 2012 Lincoln Navigator holds 28.0 gal..
The gas tank on the 2005 Lincoln Navigator holds 28.0 gal..
The gas tank on the 2001 Lincoln Navigator holds 30 gal..
The gas tank on the 2011 Lincoln Navigator holds 28.0 gal..