Nothing special about a tire change on a Trek. Head over to www.bicycletutor.com and I'n sure you can find a helpful video link there.
According to the 2003 Lincoln Navigator Owner Guide ( 5W-20 ) * with engine oil filter change , 7.0 U.S. quarts / 6.6 litres of 5W-20 engine oil
According to the 2005 Lincoln Navigator Owner Guide ( 5W-20 ) * with engine oil filter change , 7.0 U.S. quarts / 6.6 litres of 5W-20 engine oil
According to the 2006 Lincoln Navigator Owner Guide ( 5W-20 ) * with engine oil filter change , 7.0 U.S. quarts / 6.6 litres of 5W-20 engine oil
According to the 2006 Lincoln Navigator Owner Guide : With engine oil filter change : ( 7.0 U.S. quarts / 6.6 litres of 5W-20 engine oil )
According to the 2005 Lincoln Navigator Owner Guide : With engine oil filter change : ( 7.0 U.S. quarts / 6.6 liters of 5W-20 )
According to the 2002 Lincoln Navigator Owner Guide : With engine oil filter change : ( 6.0 U.S. quarts of 5W-20 engine oil )
According to the 2008 Lincoln Navigator Owner Guide : With engine oil filter change : ( 7.0 U.S. quarts / 6.6 litres of 5W-20 engine oil )
According to the 2007 Lincoln Navigator Owner Guide : With engine oil filter change : ( 7.0 U.S. quarts / 6.6 litres of 5W-20 engine oil )
According to the 2008 Lincoln Navigator Owner Guide : The 5.4 liter 3V , V8 engine takes ( 5W-20 ) * with engine oil filter change ( 7.0 U.S. quarts / 6.6 liters of 5W-20 )
5 Qts, ========================================================= According to the 2004 Lincoln Navigator Owner Guide : With engine oil filter change : ( 7.0 U.S. quarts of 5W-20 )
5 Quarts ----------------------------------------------------------------------------------------------------- According to the 2003 Lincoln Navigator Owner Guide : With engine oil filter change : ( 7.0 U.S. quarts of 5W-20 engine oil )
According to the 2006 Lincoln Navigator Owner Guide : With engine oil filter change : ( 7.0 U.S. quarts / 6.6 litres of 5W-20 engine oil )