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      01-16-2013, 05:43 AM   #60
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South Africa

Drives: BMW 1M
Join Date: Jan 2011
Location: South africa

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2012 BMW 1M  [0.00]
Originally Posted by av2 View Post
Like someone mentioned, I would change the oil out earlier than BMW's suggested interval. The factory TWS motor oil is high a quality group 4/5 synthetic. Adding just a liter of mineral won't harm your engine but it will degrade the oil inside your engine quicker. The viscosity of the oil added was thinner at operating temp plus group 1 and 2 mineral oils won't last 10,000 miles. Mineral oils should be changed out within 3,000 miles to avoid sludge build ups.
Finally, some good advice. Thank you!