
2002-2005 Range Rovers are powered by a BMW engine similar to the motor in the BMW 740. Land Rover followed BMW’s recommendation which calls for oil changes when the reminder light comes on, at roughly 15,000 mile intervals. We’ve seen too many sludge-clogged engines to agree with this service interval. We suggest changing the oil at 7,500 miles instead. Changing oil a bit more often is a small price to pay for peace of mind. 15,000 miles may be fine under controlled conditions but we feel it's pushing the envelope and the motorist is the one who pays if engine damage results.
It is vital that you use the correct oil in these engines. Use of non-approved oils can damage the valve adjusters and clog the oil galleries, leading to costly damage or even failure. Two recommended oils are Mobil 1 0-40 and BMW 5-30 synthetic. Oil filters for a BMW 740 may be used in this engine if Land Rover filters are unavailable; they are the same.
We suggest changing the "permanent" transmission fluid at 60,000 miles. No matter how good the fluid is, it will not last forever, and it carries an ever-increasing load of wear particles until it is flushed out. The ZF transmission has proven to be a weak point in these heavy trucks.
It is important to use the correct blue BMW coolant in these engines. If no Land Rover coolant is available coolant can be bought from any BMW dealer.
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