driver side under dash
For a 2005 Mercury Grand Marquis : " regular " unleaded , 87 octane According to the Owner Guide
According to the 1999 Mercury Grand Marquis Owner Guide : ( " regular " unleaded gasoline , 87 octane )
For a 1991 Mercury Grand Marquis : " regular " unleaded gasoline , 87 octane is used for both the 5.0 and 5.8
" regular " unleaded - 87 octane
According to the 2003 Mercury Grand Marquis Owner Guide : ( " regular " unleaded gasoline , 87 octane )
" regular " unleaded , 87 octane
According to the 2004 Mercury Grand Marquis Owner Guide : ( " regular " unleaded gasoline , 87 octane )
They run fine on 87 Regular Unleaded
According to the 1999 Mercury Grand Marquis Owner Guide : It is NOT a flex fuel engine ( use " regular " unleaded gasoline , 87 octane )
Mercury Marquis was created in 1967.
replace keypad Mercury Marquis?
Mercury Grand Marquis was created in 1983.