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I proceeded with the maintenance suggested by the BMW dealership (although with a bit of hate in my heart). Below are the notes from the tech that conducted the service.
"Removed cylinders, cleaned cylinders and pistons of carbon. Replaced piston rings both cylinders. Removed all valves from heads. Thoroughly cleaned the carbon buildup from heads and valves. Replaced valve guide seals. Reassembled top end. Set ignition timing. Checked valve clearances. Calibrated idle actuators. Performed throttle body sync. Drained and filled engine oil. Set oil level. test rode. Function tested. Motorcycle runs and rides as designed. Recommend return in 600-1000 miles for visual inspections. Recommend break in- vary speeds and gears as much as possible. No high revs until 600 miles (what is considered high revs is there a recommended a rev range to stay within). No lugging in high gears."
This is known as positive crankcase ventilation.
Rather than vent crankcase fumes to the air, they are recycled to combustion chamber. A requirement that appeared in the 1960s.
It gets interesting with a boxer engine configuration.
What does GM consider normal oil consumption?
During the power stroke, part of this oil layer is consumed in the combustion process. As a result, varying rates of oil consumption are accepted as normal in all engines. The accepted rate of oil consumption for engines used in the vehicles referenced is 0.946 liter (1 qt) in 3200 km (2000 mi).
Is it normal for a car to burn a quart of oil every 1000 miles?
It is a fact that most engines will burn some oil. The majority of manufacturers consider one quart of oil in the range of 1,500 miles to be acceptable. It should also be pointed out there are some performance vehicles that will consume a quart of oil in less than 1,000 miles and is also considered acceptable