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Old 02-13-2016, 10:04 PM
Van750Li Van750Li is offline
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Oil consumption?

Family friend has the new G with only 1,600km (1,000mi) on the car and he told me he's had to add a quart already. My F02 took a quart every 3-400 miles. Is the engine a carryover from the F0? BMW said it's normal to consume a quart every 1k for the new G.
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Old 02-13-2016, 10:17 PM
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It is not uncommon for an engine to consume more than normal when new, the Rings are still not set in a wear pattern.

And this motor is a revamped version of the twin turbo V8s used in the F02, many changes to the engine.
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Old 02-15-2016, 11:18 PM
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Quote:
Originally Posted by Van750Li View Post
Family friend has the new G with only 1,600km (1,000mi) on the car and he told me he's had to add a quart already. My F02 took a quart every 3-400 miles. Is the engine a carryover from the F0? BMW said it's normal to consume a quart every 1k for the new G.
Is it a 750i? Those have the N63TU2 engine. Its predecessors (the N63 and N63TU) are known for excessive oil consumption. It would be really unfortunate if BMW still hasn't been able to address this problem in their third iteration of this engine!
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Old 02-17-2016, 12:43 PM
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As long as it is still a N63, it probably will not matter with version of "tu" it is. My thinking is that it is an inherent design flaw with high susceptible to oil consumption due to gradual premature component failures. I will never buy another N63 from BMW how beautiful or high tech the car is.
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Old 02-17-2016, 01:05 PM
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It is too early to say yet, but if you read through the N63TU2 technical training document there was a big revamp in the cylinder head cooling system, which should help keep the valve guide seals from failing as rapidly as they were on the previous motors.
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Old 02-17-2016, 03:09 PM
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Originally Posted by God-Follower View Post
It is too early to say yet, but if you read through the N63TU2 technical training document there was a big revamp in the cylinder head cooling system, which should help keep the valve guide seals from failing as rapidly as they were on the previous motors.
Possibly, but the OP is talking about a brand new G... Cars with the N63 and N63TU were known for excessive oil consumption even when new (presumably before the valve guide seals had a chance to fail). Was hoping that all this is behind us with the N63TU2...
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Old 02-17-2016, 03:31 PM
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Originally Posted by visualguy View Post
Possibly, but the OP is talking about a brand new G... Cars with the N63 and N63TU were known for excessive oil consumption even when new (presumably before the valve guide seals had a chance to fail). Was hoping that all this is behind us with the N63TU2...
I put valve guide seals in an N63TU at 8k miles, and seen multiple more sets fail with less than 20k

Only seen 1 low mileage TU with oil consumption that was not valve guide seals, and it had scoring in one cylinder.
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Old 02-17-2016, 06:33 PM
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I put valve guide seals in an N63TU at 8k miles, and seen multiple more sets fail with less than 20k

Only seen 1 low mileage TU with oil consumption that was not valve guide seals, and it had scoring in one cylinder.
Quite disturbing... I hope the cooling changes in the N63TU2 fix this...

I wonder what the maximum mileage is that anyone was able to put on an N63 or N63TU without any engine trouble. Can it go 60K, 80K, 100K without issues?
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