Of interest anyway on another forum website, (an easy google search will find it), there is a discussion about adding a dipstick to the N55 motor - Only one car with N55 has one, it’s the M235i racing, only 170 were built. Involves draining the oil, removing the pan, drilling/ tapping a hole, etc.
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-Steve
2015 BMW X1 35i MSport // BMS Intake
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