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Re: BMW 316 leaking oil, about 1 litre every 2 weeks
Your going to have to clean it down good with some engine cleaner, then run engine, try to pin down leak. may have a bad oil preasure switch thats leaking, or oil filter, or a gasket; hope this helps good luck.
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Several ideas. 1) When the dealer completed servicing it, did you check the oil to see if it was full? If it wasn't it would need added oil sooner. 2) .9 litre does sound excessive, but what was it using before? 3) Find a way to give the bottom side of your Toy a really good flashlight inspection to look for leaks and seepage. This should give you a clue as to what is going on. If it is dry underneath, someone needs to check the oil weekly until a pattern is established of oil usage. Be blessed.
Common oil leaks on a 3 series are:
1) Power steering hoses. If you have not yet replaced any power steering hoses on a 2002 I can almost promise you that one or more of them are leaking.
2) Valve cover gasket. Same comment as above. This tends to leak on the exhaust manifold side and stink like burned plastic as the synthetic oil burns on the manifold.
3) Oil line to the VANOS.
4) Oil filter housing.
Oil from any of these leaks will tend to move rearward as it makes its way to the ground.
if there no leaks , now those older excels had problems with the rear main seals leaking with high milage, but you will see it under the car. also bad valve seals will cause a large oil consumption issue,but often you will see blue/ white smoke out the tailpipe esp on start up.
hi, this consumption seems high, i would take it to a dealer and ask them to check the oil sensor.......
P.S. is there a lot of smoke coming from the exhaust, if so, it may be burning a little oil, ask dealer to check it
The problem is with the gear oil. To keep ahead of the rest BMW started what they call life time oil for their gear boxes, though that sounds great it doesn't really work in reality, they have now gone back to recommending a gear oil change every 60k miles.
In short you need to change your gear oil and soon, the oil in your gear box is no longer effective and will damage the gear box. You'll need about 5 litres for your car and costs around £15 a litre, expensive stuff!! I had the same problem with my 328i auto, the dealer was clueless and kept quoting the lifetime oil, I changed the oil and the problem has gone and it's so much smoother.
Look for Castrol TWS 10W60 Motor Oil. This car should not burn so much oil, you need to use a different kind. It is recommended by BMW as well. I also heard the VANOS isnt an issue anymore, can be fixed with a different MAFF. Good luck!