According to the Owners Manual (see below) the gas tank size is 16 gallons
16 gallons ( U. S. )
The 1996 Mercury Sable the OBD 2 connector is under drivers dash next to kick panel
dodge intrepid
( fuse # 21 ) is a 20 amp fuse for the cigarette lighter on a 1996 Mercury Sable
The most common cause for a 1996 Mercury Sable not starting is a dead battery. The second most common cause for the automobile not to start is a lack of fuel.
On a Mercury Sable : firewall 1-----2-----3 4-----5-----6 front of vehicle > driver
It was the starter
Mercon V
P205/65R-15.
100 ftlbs
On a 1996 Mercury Sable : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
According to the 1996 Mercury Cougar Owner Guide : ( 18.0 US. gallons )