My 2004 BMW Z4 2.2i is consuming oil at a rate of about 1 litre every 3 months. Have you any idea why it is using so much oil? The last time it was service was 3000 miles ago and I cannot see any oil leakage
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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.
Last month, my wife complained of high gas usage as well. I suddenly remembered that I had forgotten to change the air filter the last time I did the oil change. It had been over 5 months since I'd put a new one in. So, we got a new air filter, and monitored the usage, and it was back to normal again. Maybe try this?
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.
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
After 170K miles, you,ll have piston-Ring wear and valve wear.
There are certain oil additives, that can help with this.
It would be practical, to have the cylinder head refurbished also. valves re-ground and any valve stem oil seals replaced.
this won,t be a complete solution. but will definately help reducing oil usage, and excessive fuel emmisions.
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!