Originally Posted by UR2SLOW1
Thanks for the handy diagram, I thought that was the location but was not sure. According to the e90 forum the 135i engine holds 6.9qts of oil, holy cow.
that may be the total capacity, if so, it doesn't all drain out when you do an oil change and you may only need to add 5.5-6 quarts/liters to avoid overfilling the oil. overfilling the oil is bad.