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The 2008 Jeep Grand Cherokee SRT8 is equipped with a 6.1 liter V8 engine that requires 0W-40 Synthetic Motor Oil for optimal performance in any weather condition. Synthetic oil, unlike conventional oil, is artificially engineered with chemical compounds and has fewer impurities. The vehicle's oil capacity is 7 quarts with a filter, and the recommended torque for the drain plug is 20 ft/lbs. Regular oil changes are crucial to maintain a clean and smoothly running engine. It's essential to remember that oil needs to be replaced periodically as it can deteriorate over time. For the Cherokee, it is recommended to change the oil and filter every 6,000 miles or every 6 months, depending on which interval occurs first. Keep an eye on the oil life indicator to know when it's time for a change.
Oh, the reason for that is because those engines require a lighter weight oil. Using oil that is too heavy will not last beyond 2000 kilometers.
The recommended oil for the 2008 Jeep Grand Cherokee SRT8 is 0W-40.