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22 gals
well 16 gallons maybe 18 if ya squeeze as much as you can get in there
15
18 gallons
24.5 gallons
A 1990 Olds Regency's gas tank will hold 18 gallons of gas.
18
most likely 14 to 16 gallons
Depends on what specific Oldsmobile you're referring to, Sparky...
According to http://consumerguideauto.howstuffworks.com/1990-to-1997-oldsmobile-cutlass-supreme-4.htm, the fuel capacity for the 1994 Cutlass Supreme is 16.5 gallons. Many years ago I owned a 1968 Cutlass Supreme convertible--a very fun car.
15 gallons. Just look for an OE tank on line an check the specs.
It holds about 15 gallons. Um ehem, It actually hold 18 gallons. The 1999 LSS models only hold 19 gallons.