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 Buick Regal III Coupe 3.1 V6 (137 hp) Automatic
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1988
Buick Regal III Coupe 3.1 V6 (137 hp) Automatic1989
Buick Regal III Coupe 3.1 V6 (137 hp) Automatic1990
Buick Regal III Coupe 3.1 V6 (137 hp) Automatic1991
Buick Regal III Coupe 3.1 V6 (137 hp) Automatic1992
Buick Regal III Coupe 3.1 V6 (137 hp) Automatic1993
Buick Regal III Coupe 3.1 V6 (137 hp) Automatic1994
Buick Regal III Coupe 3.1 V6 (137 hp) Automatic1995
Buick Regal III Coupe 3.1 V6 (137 hp) Automatic1996
Buick Regal III Coupe 3.1 V6 (137 hp) Automatic