Oil level problems!

jer335 · 04-28-2014, 12:11 PM

Two weeks ago, BMW installed new turbos under warranty. Got the car back. There was a leak from the o-ring from the return line. Dropped car off last week to get leak fixed. Got car back on Friday. Checked oil level indicator and oil was 3/4. On Saturday oil was down to 1/4. On Sunday it was telling me +1. Added a quart. Oil was max and after driving an hour oil was down to half. I don't see or smell any oil leaking. I understand that the oil indicator fluctuates depending on the heat and condensation of the oil. However I don't know if I'm really getting accurate readings. Last oil change was about 2000 miles ago. Oil I use is Redline 5w30. Car is a 07 335i AT. Any inputs or advice on this? Thanks.

BQTuning · 04-28-2014, 01:34 PM

Sound like the oil level sensor , I have a similar issue, the only difference mine always shows full when it isn't

peter91118 · 04-28-2014, 02:59 PM

Drain your oil and measure how much comes out. If the amount measured agrees with your sensor, then you might have issues. If you get 7 liters out, probably just a bad sensor.

04-28-2014, 12:11 PM	#1
jer335 Private 9 Rep 66 Posts Drives: 335i Join Date: Dec 2013 Location: San Jose, CA iTrader: (0)	Oil level problems! Two weeks ago, BMW installed new turbos under warranty. Got the car back. There was a leak from the o-ring from the return line. Dropped car off last week to get leak fixed. Got car back on Friday. Checked oil level indicator and oil was 3/4. On Saturday oil was down to 1/4. On Sunday it was telling me +1. Added a quart. Oil was max and after driving an hour oil was down to half. I don't see or smell any oil leaking. I understand that the oil indicator fluctuates depending on the heat and condensation of the oil. However I don't know if I'm really getting accurate readings. Last oil change was about 2000 miles ago. Oil I use is Redline 5w30. Car is a 07 335i AT. Any inputs or advice on this? Thanks.
	Appreciate 0 Tweet Quote

04-28-2014, 01:34 PM	#2
BQTuning Banned 469 Rep 4,392 Posts Drives: 2012 Z4 sDrive35i M Sport 6MT Join Date: Nov 2010 Location: bq@bqtuning.com iTrader: (0)	Sound like the oil level sensor , I have a similar issue, the only difference mine always shows full when it isn't
	Appreciate 0 Quote

04-28-2014, 02:59 PM	#3
peter91118 Second Lieutenant 29 Rep 243 Posts Drives: '01 325xit, '09 335i Join Date: Jun 2013 Location: NH iTrader: (0)	Drain your oil and measure how much comes out. If the amount measured agrees with your sensor, then you might have issues. If you get 7 liters out, probably just a bad sensor.
	Appreciate 0 Quote