The 2008 BMW X5 oil type and capacity iS5w30 and 8.5 quarts for the 4.8L v8 engine. Having high quality oil is key for the engine to run smoothly. You will run into issues with the oil at some point. Knocking noise may show up from the engine. Bad oil can cause the engine to stop working. A common problem is an awful burning smell. This needs to be inspected as soon as possible or the car might explode. You could experience bad gas mileage. Your oil needs to be replaced eventually. Every 5,000 to 10,000 miles is a good rule of thumb. If You don't replace it, there will be issues with the engine.
John A.
January 2, 2020
Both engine options in the 2008 BMW X5 the 3.0L V6 and the 4.8L V8 use 5W30 or 5W40 synthetic oil. The 3.0L V6 engine needs 6.9 quarts and the 4.8L V8 uses 8.5 quarts.
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