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1987 Oldsmobile Ninety Eight

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1987 Ninety Eight.

Transmission Automatic 4-spd

The 1987 Oldsmobile Ninety Eight is EPA-rated at 16/25/19 mpg city/highway/combined.

Model year1987 1984

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

EPA fuel economy16/25/19 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses OE oil filter 12731175. Note the factory fuel filter is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

OE service part numbers OEM · verified

Engine oil filter	12731175
Engine air filter	24577608
Fuel filter	25171792 discontinued
Spark plug	19300749
Front wiper blades	22155381
Serpentine belt	88986824
Thermostat	24506986 alt 12337860

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length	196.5 in
Overall width	72.4 in
Overall height	55.1 in
Wheelbase	111 in
Curb weight	3303 lb
Weight distribution (front / rear)	63/37

Ratings & economy EPA / vPIC

EPA city / highway / combined	16 / 25 / 19 mpg
Drivetrain	Front-Wheel Drive
Passenger volume	111 cu ft
Cargo volume	16 cu ft
Recommended fuel	Regular Gasoline

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

Lubricants & capacities

Engine Coolant	ETHYLENE GLYCOL
Power Steering Fluid	USE GM PART NO. 1050017 OR EQUIVALENT

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter at 7,500 mi; coolant every 30,000 mi. The big-interval services (every 30,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

At 7,500 mi	Engine Oil Filter (replace) · Throttle Body (torque) · Tire & Wheel Assembly (rotate)
Every 7,500 mi	Axle Shaft Oil Seal (inspect) · Body Latches, Locks & Hinges (inspect) · Brake System (inspect) · CV Joint Boot (inspect) · Engine Oil (drain & refill) · Exhaust System (Complete) (inspect)
Every 15,000 mi	Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 30,000 mi	Accessory Drive Belt (inspect) · Engine Air Filter Element (replace) · Engine Breather Filter (replace) · Engine Coolant System (drain, flush & refill) · Fuel Line (inspect) · Fuel Tank (inspect)
Every 100,000 mi	Transmission Fluid & Filter (replace)