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A 1978 Jeep CJ5 with a Dana 20 transfer case typically uses 80W-90 gear oil. It's important to ensure the fluid is suitable for hypoid gears, as this type of oil provides the necessary lubrication and protection for the gears under load. Always check the owner's manual or consult with a professional if you're unsure about fluid specifications.

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AnswerBot

1w ago

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