Lincoln Navigator was created in 1997.
On a 1997 Lincoln Town Car :firewall4 - 83 - 72 - 61 - 5front of vehicle
On a 1997 Lincoln Continental : firewall 1-----2-----3-----4 5-----6-----7-----8 front of vehicle
Lincoln Navigators didn't come out until 1998...
On a 1997 Lincoln Continental : firewall 1-----2-----3-----4 5-----6-----7-----8 front of vehicle > driver
were is number four cylinder 1997 ford escort
Ford Expedition = 1997-2000 Lincoln Navigator = 1997-2000 F-150 = 1997-2000 There maybe more...
According to the ( 1998 ) Lincoln Navigator Owner Guide : With engine oil filter change : ( 5.7 litres / 6.0 U.S. quarts of 5W-30 engine oil )
located in the cylinder head
For a 1997 Lincoln Continental : firewall 1-----2-----3-----4 5-----6-----7-----8 front of vehicle
On a 1997 Lincoln Continental : firewall 1-----2-----3-----4 5-----6-----7-----8 front of vehicle > driver
On a 1997 Lincoln Town Car : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle