Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1989 Geo Spectrum L4-91.5 1.5LFACTORY OEM SERVICE PROCEDURE
Crankcase
Type SG, SH(Motor Oil, API Service SG, SH)
CAPACITY, Refill:
Metro, Firefly, Sprint (incl. filter) 3 cyl.
1989-93 3.5 liters 3.7 quarts
Metro 3 cyl. 1994 3.3 liters 3.5 quarts
Metro 4 cyl. 3.1 liters 3.3 quarts
Spectrum 2.8 liters 3.0 quarts
Storm, Sunfire; SOHC 3.0 liters 3.2 quarts
DOHC 3.8 Liters 4.0 quarts
Capacity shown is without filter. When replacing filter, additional oil may be needed.
1989 Spectrum:
Above 40~F(4~C) 30*
Above 0~F(-18~C) 10W-30**
All temperatures 5W-30**
1990-93 Storm, Sunfire:
Above 40~F(4~C) 30*
Above 0~F(-18~C) 10W-30**
All temperatures, SOHC 5W-30**
Below 60~F(16~C), DOHC 5W-30**
* May be used only if other recommended viscosities are not available
** 10W-30 preferred for DOHC engines
5W-30 preferred for SOHC engines
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.