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sae 10w-30 or sae 10w-40 would be the best if u are currently using normal motor oil. or if it currently has sybthetic motor oil use that. no matter wat u decide, make sure u stik with that type of oil.

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17y ago
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10y ago

The 4.0 uses 10w30. The 4.7 uses 5W30. Both can use synthetic, conventional, or a blend.

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11y ago

The six cylinder uses 10w30. The v8 uses 5w30.

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Q: What kind of oil should you use in a 2003 jeep grand Cherokee?
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