An '07 328 engine holds 6.9L of oil. At what level BELOW that 6.9L "full" level should the electronic oil level gauge read anything less than max full? What are BMW's factory specifications/tolerances for this critical gauge? I have asked this on a couple of forums but have not received a knowledgeable response. The reason I ask is I changed the oil and filter in my wife's '07 328 Conv. at 1,500 mi. and initially refilled it with 6 qts. I then ran the car for about 5 min. and checked the oil level with the electronic gauge, which read 100% full (??). I did NOT add any more oil to the system at this time. The next time the car was driven was a 45 mile drive and at the end of the drive I checked the oil level again but it still read full. It wasn't until I had put almost 300 mi. before the level finally dropped to 3/4 full, at which time I added .25 qt. of oil and again it now reads full and has for the last 2,000 mi. A few additional items: 1) Oil was drained while the car was on my lift, all oil was drained, plug was out for 5+ min. after filter was changed. 2) New BMW oil, filter and crush washers were used 3) Other than the first oil level check after the oil change I only check the oil after a 30 min. drive at least and let the car idle for a min. or so, usually at a gas stop before actually checking the oil level. 4) I've worked on all my cars for the last 30 yrs., including 4 Porsche's, 5 BMW's and many others. 5) Give me back the damn dipstick, they can't be that expensive on a $50K vehicle! In my opinion there are 3 things BMW needs to do to get this enthusiast interested in it's new cars, return the dipstick, include a spare tire and make a speedometer that reads a LOT closer than the 7% high that my wife's car reads! Our '06 Porsche Cayenne S's speedo is dead on accurate and they abide by the same Euro regs. BMW is claiming to suffer from.