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.
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HOMESERVICE MANUALSOLDSMOBILE1991CALAIS L4-151 2.5LREPAIR AND DIAGNOSISSPECIFICATIONSCAPACITY SPECIFICATIONSCOOLING SYSTEMSYSTEM SPECIFICATIONS
1991 Oldsmobile Calais L4-151 2.5L
System Specifications
1991 Oldsmobile Calais L4-151 2.5LSECTION System Specifications
MAKE, YEAR & MODEL LITERS QUARTS
OLDSMOBILE ACHIEVA, OMEGA, CALAIS
1992-89 4-cyl. ex. H.O 10.0 10.5
4-cyl. H.O 10.5 11.0
V6 10.5 11.0
1988-86 4-cyl 7.5 8.0
V6 9.5 10.0
1985 4-cyl 9.0, 9.5* 9.5, 10.0*
V6 12.0, 11.5* 13.0. 12.0*
1984 4-cyl 8.5. 9.0* 9.0, 9.5*
V6: 2.8L (173)(X):
AT 9.5, 10.0* 10.0, 10.5*
MT 9.5, 11.5* 10.0, 12.0*
2.8L (173)(Z) 10.0 10.5
1983 4-cyl 9.0, 9.5* 9.5, 10.0*
V6 11.0, 11.5* 11.5, 12.0*
* Indicates with air conditioning
OLDSMOBILE ACHIEVA, OMEGA, CALAIS
1992-89 4-cyl. ex. H.O 10.0 10.5
4-cyl. H.O 10.5 11.0
V6 10.5 11.0
1988-86 4-cyl 7.5 8.0
V6 9.5 10.0
1985 4-cyl 9.0, 9.5* 9.5, 10.0*
V6 12.0, 11.5* 13.0. 12.0*
1984 4-cyl 8.5. 9.0* 9.0, 9.5*
V6: 2.8L (173)(X):
AT 9.5, 10.0* 10.0, 10.5*
MT 9.5, 11.5* 10.0, 12.0*
2.8L (173)(Z) 10.0 10.5
1983 4-cyl 9.0, 9.5* 9.5, 10.0*
V6 11.0, 11.5* 11.5, 12.0*
* Indicates with air conditioning
RENDER: 1.0x
NO RELATED
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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.