Recommended Engine Oils
High mileage (>150 000 km)
Priority to 40-viscosity oils for enhanced protection of worn components
Recommended Additives & Treatments
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Select year of manufacture Mercury Grand Marquis I 5.0 L V8 (150 hp)
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1983
Mercury Grand Marquis I 5.0 L V8 (150 hp)1984
Mercury Grand Marquis I 5.0 L V8 (150 hp)1985
Mercury Grand Marquis I 5.0 L V8 (150 hp)1986
Mercury Grand Marquis I 5.0 L V8 (150 hp)1987
Mercury Grand Marquis I 5.0 L V8 (150 hp)1988
Mercury Grand Marquis I 5.0 L V8 (150 hp)1989
Mercury Grand Marquis I 5.0 L V8 (150 hp)1990
Mercury Grand Marquis I 5.0 L V8 (150 hp)1991
Mercury Grand Marquis I 5.0 L V8 (150 hp)