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 MANUALSBUICK1985CENTURY V6-231 3.8LREPAIR AND DIAGNOSISSPECIFICATIONSCAPACITY SPECIFICATIONSFLUID - DIFFERENTIAL
1985 Buick Century V6-231 3.8L
Fluid - Differential
1985 Buick Century V6-231 3.8LSECTION Fluid - Differential
Standard, Riviera 80W, 80W-90* GL-5(Gear Oil, API Service GL-5)
Limited-Slip 80W, 80W-90* GL-5*
*For vehicles normally operated in Canada, 80W only
CAPACITY, Refill:
Regal 1.7 Liters 3.5 Pints
Riviera 1.6 Liters 3.3 Pints
LeSabre, Electra RWD:
7-1/2" ring rear 1.7 Liters 3.5 Pints
8-1/2", 8-3/4" ring gear 2.0 Liters 4.3 Pints
LIMITED-SLIP IDENTIFICATION:
Tag under rear cover-attaching bolt
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.