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What weight oil do you use for a 2001 jeep wrangler 4.0L engine?

The recommended oil weight for a 2001 Jeep Wrangler with the 4.0L engine is 5W-30. However, you should always check your owner's manual for the most accurate and up-to-date information. The manual will specify the recommended weight and type of oil (conventional, synthetic blend, or full synthetic). Climate conditions can also influence the choice of oil weight.