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 MANUALSCHEVROLET1985G 30 VAN V8-305 5.0LREPAIR AND DIAGNOSISSPECIFICATIONSCAPACITY SPECIFICATIONSENGINE OIL
1985 Chevrolet G 30 Van V8-305 5.0L
Engine Oil
1985 Chevrolet G 30 Van V8-305 5.0LSECTION Engine Oil
TYPE SG
CAPACITY, Refill:
4-cyl. 1.9L 3.8 Liters 4.0 Quarts
4-cyl. 2.5L 2.8 Liters 3.0 Quarts
6-cyl. 4.3L 3.8 Liters 4.0 Quarts
6-cyl. 292 eng. 4.7 Liters 5.0 Quarts
8-cyl. 454 eng.
K30/K35 models 4.8 Liters 5.0 Quarts
8-cyl. 454 eng. other models 5.7 Liters 6.0 Quarts
Others 3.8 Liters 4.0 Quarts
Capacity shown is without filter. When replacing filter, additional oil may be needed
Above 40°F (4°C) 30
Above 20°F (-7°C) 20W-20
Above 10°F (-12°C) 15W-40
Above 0°F (-18°C) 10W-30‡
Below 60°F (16°C) 5W-30*
*5W-30 preferred up to 100°F (38°C) in 1.9L, 2.0L, 2.5L & 2.8L engines
‡10W-30 Preferred for 292 6-cyl., 4.3L V-6, all V-8
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.