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10 platform

1988 Subaru GL-10

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1988 GL-10.

The 1988 Subaru GL-10 operates on its designated 10 platform with an engine requiring 4.2 quarts of oil—accommodating 10W-30, 10W-40, or 10W-50 API SM viscosities—establishing the mechanical baseline for this iteration of the model. When evaluating its place in the vehicle's reliability timeline, this model year presents a modest 21 total owner complaints, yet the concentration of those issues in the seat belt category alongside three separate recalls indicates specific safety hardware vulnerabilities. Consequently, researchers should view the 1988 GL-10 as a generally manageable historical platform, provided they account for the documented restraint-system shortcomings that define its service record.

Model year1989 1988 1987 1986 1985

Quick specs

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

Engine oil capacity4.2 qtOEM · verified

Engine oil type10W-30 / 10W-40 / 10W-50 API SMOEM · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length	174.8 in
Overall width	65.4 in
Overall height	55.5 in
Wheelbase	96.9 in

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the GL-10 of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

10.3 sec0–60 mph (tested)quickest 10.30 sec — 1986 Turbo Sedan

Year	Trim / engine	0–60	¼ mile	HP	Drivetrain
1986	Turbo Sedan 1.8L Turbo F-4	10.30 sec	17.60 sec	111 hp	4WD

Service quick specs OEM factory data

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

This engine holds 4.2 qt of 10W-30 / 10W-40 / 10W-50 API SM engine oil, DOT 3 brake fluid.

Lubricants & capacities

Brake Fluid	DOT 3
Engine Coolant	ETHYLENE GLYCOL
Engine Oil	10W-30 · 10W-40 · 10W-50 · API
Engine Oil Capacity	4.2 qt
Power Steering Fluid	ATF
Transfer Case Fluid	80W-90 · GL-5
Transfer Case Fluid Capacity	2.5 Pints

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter at 3,000 mi.

At 3,000 mi	Engine Oil (drain & refill) · Engine Oil Filter (replace)
Every 7,500 mi	Engine Oil (drain & refill) · Engine Oil Filter (replace)
Every 15,000 mi	Body Latches, Locks & Hinges (inspect) · Brake System (inspect) · Clutch Assembly (inspect) · Engine Coolant System (leak inspection) · Hill Holder System (inspect) · Power Steering System (inspect)
Every 30,000 mi	Accessory Drive Belt (inspect) · Brake Drum Assembly (inspect) · Brake Hydraulic System (drain, refill & bleed) · Brake Power Booster Unit (inspect) · Differential (inspect fluid level) · Engine Air Filter Element (replace)
Every 60,000 mi	Wheel Bearing (inspect)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

Owner complaints about the 1988 Subaru GL-10 dominate in one area — the seat belts, 12 of 21 reports (57%), well ahead of the next concern. That matters, because the seat belts are also the target of recall 95V-103 on this vehicle — so the single most useful check before buying or servicing one is confirming it was actually performed. 4 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the seat belts pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

4 involved a crash · 0 a fire

Owner complaints filed with NHTSA, by component

All 21 complaints on record, top 8 components.

Seat Belts12

Engine & Engine Cooling2

Service Brakes, Hydraulic2

Suspension,Engine & Engine Cooling1

Suspension1

Power Train1

Electrical System1

Vehicle Speed Control1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 3 campaigns on record for this vehicle.

05E065000Fuel System, GasolineReported 05/10/2005

CERTAIN SPX FILTRAN FUEL FILTERS WITH A 45-DEGREE ANGLE INLET TUBE, MODEL 800F350-S1, SOLD AS REPLACEMENT FILTERS FOR 1993-1997 FORD PROBE,1993-2001 MAZDA 626 AND MX-6, AND 1983-1994 LOYAL, 3-DOOR COUPE, HATCHBACK… Remedy: SPX WILL NOTIFY ITS CUSTOMERS AND PROVIDE A FULL REFUND. THE RECALL BEGAN SEPTEMBER 27, 2005. OWNERS MAY CONTACT MR. CHRIS GREESON AT 704-869-3733 OR CONTACT THE WIX INFORMATION…

95V103006Seat Belts:Front:Buckle AssemblyReported 24/05/1995

THE FRONT SAFETY BELT BUCKLE RELEASE BUTTONS CAN BREAK. THESE RED PLASTIC RELEASE BUTTONS ARE MARKED "PRESS." IF A BUTTON BREAKS, PIECES CAN FALL INTO THE BUCKLE ASSEMBLY CAUSING THE BUCKLE TO OPERATE IMPROPERLY. Remedy: OWNERS SHOULD PROMPTLY CHECK THE CONDITION AND OPERATION OF BOTH FRONT SAFETY BELT BUCKLES AND CAREFULLY INSPECT THE RED RELEASE BUTTON FOR ANY BREAKS OR CRACKS. THEY SHOULD…

Technical service bulletins NHTSA · verified

Showing 5 of 10 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
15-302-22	2022-08-23	Equipment	This bulletin contains illustrations of exchange components and their manufacturer as…
01-167-08R	2022-08-23	Equipment	This bulletin contains additional information for recommended materials listed in the…
15-192-22R	2022-03-18	Electrical System	This bulletin has been developed to outline the steps for gathering basic essential…
01-167-08R	2021-06-17	Electrical System	This bulletin contains additional information for recommended materials listed in the…
09-51-08R	2021-06-07	Equipment	This bulletin is to advise of SOAâs revised catalytic converter recycling program…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420

Catalyst system efficiency below threshold — Bank 1

P0300

Random / multiple cylinder misfire detected

P0171

System too lean — Bank 1

P0455

Evaporative emission system leak detected — large leak

P0128

Coolant thermostat below regulating temperature

P0442

Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN

Decode a VIN to confirm the transmission and build data for a specific GL-10. OEM

Build data

Plant, GVWR class, engine and body data for any 17-character VIN.

Recalls

Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Vehicles taking 4.2 qt 10-platform vehicles

Reference guides

Cross-vehicle references for the kinds of data on this page.

Vehicle recalls & TSBs OBD-II trouble codes Maintenance schedules Fluid capacities & specs

Frequently asked

How much oil does the 1988 GL-10 take?

4.2 qt of 10W-30, 10W-40 OR 10W-50 API SM, per the factory manual.

Does the 1988 GL-10 have open recalls?

NHTSA lists 3 recall campaign(s) for this model year. Check your specific vehicle by VIN.