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In the 2006 Jeep Grand Cherokee Laredo with the 3.7L engine, it is recommended to use SAE 5W-30 engine oil. Jeep advises opting for synthetic oil when it's time for an oil change. Synthetic oil is a lab-engineered option that provides better wear protection and longer lifespan compared to conventional petroleum-based oil. This allows for longer intervals between changes, typically around 7,500 miles compared to the 3,500 to 5,000 miles for conventional oil. It's advised to check the oil level monthly and ensure there are no visible debris or signs of burning.
The 2006 Jeep Grand Cherokee Laredo uses a 3.7-liter engine that requires 5w-30 full synthetic motor oil.