On a 2003 BMW 320i, the dipstick has 3 bars with 2 separations in between (I don't know how to explain it but could take a picture if you don't know what I am talking about). Next oil change is due in about 3400 KM's and yesterday when I turned the car off, the yellow oil light turned on. I turned the car on right away and it went off and stayed off. My question is where is the oil level supposed to be on the dipstick?