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    Low accuracy of oil level measurement

    Made some annoying experiences over the past few weeks with the oil level measurement in my 997S and are interested in other people's experiences.

    I 'lost' the first bar (0.4l) of the oil level display after less than 400km.
    The second bar vanished at around 600km.
    I drove another 100km and oil level display still displayed 1 bar before minimum. So, I added 0.5l at 700km. Before the next drive I checked the oil in cold state and all three bars were displayed.
    I drove another 100km. Before the next drive I checked the oil in cold state at around 800km and all bars (even the bar that indicates overfilling) are displayed!
    I drove another 100km and had to enter the gas station to refuel. When I started the car after refueling, the oil measurement display popped up without me having started the oil measurement. It displayed all bars including the overfilled bar. The oil level display didn't vanish and I had to acknowledge the display with the onbord computer stick. I was really concerned and started the oil measurement in warm state with the car parked on even level. Oil measurement in warm state took about 5 minutes. Then it displayed just the 3 bars without the overfilled bar.
    Before the next drive I checked the oil in cold state. The result was still 3 bars without the overfilled bar. I drove another 50km and before the next drive at 950km I just got 2 bars in cold state!
    So, it went from overfilled display to 1 bar below maximum in just 50km. It looks like oil level measurement is not very accurate.
    My advice is to never fill in more than 0.4l of oil if oil level display is 1 bar before minimum.

    Re: Low accuracy of oil level measurement

    same issues here, i think it's a joke. i had one bar and put in half a quart and was then at all bars including overfill. sounds like old system was more accurate with oil level on my 993.

    Re: Low accuracy of oil level measurement

    Totally agree. I've only had the car for 1000miles, and I'm down to the 1/2 mark (2 bar above minimum), but intermittantly, it goes down to 1 bar above minimum. I don't get it. Since overfilling is bad and underfilling is bad as well, I think I will aim for 1 bar less than the max line. Crazy!

    Re: Low accuracy of oil level measurement

    It has been noted on the 987 that the oil level measurement is VERY sensitive to the position of the car (nose up or nose down). I'm talking rain run-off sort of slopes on spots you'd think were pretty flat. I don't know if this would account for anything you're seeing? It's very annoying, I have to agree, and doubly agree that it's best to only fill 250ml at a time.

    Re: Low accuracy of oil level measurement

    Let's all email Porsche and ask about this this convenient, non-puzzling solution: How about we just drive until the the extreme, final, and about-to-explode warning light comes on, then add a quart. No problem.

    Re: Low accuracy of oil level measurement

    I have yet to add any oil to my 997S, in 4,000 miles. It started out new on full, then lost one bar below full at around 1,000 miles, and has remained stable at that 3-bar level ever since. I check my oil in my perfectly level garage, every week. I'm not going to bother topping it off with oil until I see the car consistently reading 2 bars below full (1/2 mark), as anything within the range is safe. Funny, how my car is using so little oil, considering how I didn't follow the break-in procedure to the absolute fanatical religious cult-like letter!! LOL!!!

    Re: Low accuracy of oil level measurement

    Quote:
    wtsnet said:
    It has been noted on the 987 that the oil level measurement is VERY sensitive to the position of the car (nose up or nose down).


    That's true. I noted great differences in the measurement just depending of the car's position.

    Re: Low accuracy of oil level measurement

    I totally concure. I have no faith in the reading; and I check it daily. We only have level ground in Florida, so it's not a matter of what angle it's on. The reading is usually down 1-2 bars; but every so often I'll get a reading at the bottom level. I don't get it. 996 was much more accurate. I realy wish there was a dipstick. Revvv

    Re: Low accuracy of oil level measurement

    "I 'lost' the first bar (0.4l) of the oil level display after less than 400km.
    The second bar vanished at around 600km.
    I drove another 100km and oil level display still displayed 1 bar before minimum. So, I added 0.5l at 700km. Before the next drive I checked the oil in cold state and all three bars were displayed."


    With my 996 Turbo you could only measure the oil level while the car was running and up to temp. Now with the 997 you can only measure with it off. But I think there may be a big difference between measuring when it's off overnight (measuring cold) and measuring after a drive or at a gas station. There has to be a good amount of oil that settles after 5-30 minutes or so. I think they have the gas station oil check as a more fequent reminder /precautionary measure.

    I believe the manual says to check 'before starting for a trip' in other words cold measure. It seems you are getting less bars when warm and that makes sense. The same thing has happened to me.

    Re: Low accuracy of oil level measurement

    Quote:
    Revvv said:We only have level ground in Florida, so it's not a matter of what angle it's on.


    Quote:
    wtsnet said:
    It has been noted on the 987 that the oil level measurement is VERY sensitive to the position of the car (nose up or nose down). I'm talking rain run-off sort of slopes on spots you'd think were pretty flat.


    I said VERY sensitive. Honestly, I think it is, at least on on the 987.

    So what happens when it rains in Florida? Do you get big puddles? (Or doesn't it ever rain? )

    Re: Low accuracy of oil level measurement

    Thanks for your replies. So, that seems to be a common problem. Even Porsche doesn't seem to care about the oil level display. My 993 was in for service the last week and I got a base 997 loaner car during that time. When I got the car I didn't care about oil level measurement and just drove off. But before the second drive I routinely started the oil level measurement in cold state and got a blinking underfilled bar I gave the Porsche center a call. They would top up oil when I bring the car back two days later and I should just drive on. Luckily, I got no red oil level warning forcing me to immediately stop the car.

    BTW, I bought my 997S without having tested a base 997 before. Now after my short base 997 intermezzo I can say that I'm really glad I went for the S. The base 997 feels so slow compared to the S. The minor power and torque difference on the paper makes a huge difference in reality. While the S blasts off like a rocket, the base feels more like my good old 285PS/340Nm 993 - it lacks torque everywhere

    Hmm, and the base triangularly shaped steering wheel feels like you have next to nothing in your hands. I have the thicker sports steering wheel in the S and can highly recommend it

    Re: Low accuracy of oil level measurement

    Same problem here guys. I was down 1 bar on the weekend (I waited for the bar to show it low by 1 bar for 5 consecutive days simply because it continously changes). I added 350ml of oil, and the display then showed that I had overfilled (all bars inc. the one above max.) I drove the car for around 5 miles in Sport mode and really smelt some burning for the first 3.

    This really worries me. The car is now showing all but the top overfill level, but I'm wondering if the burning smell is anything to worry about. I've driven 250 miles since then and all seems to be ok. I hate not having a dipstick!

    Re: Low accuracy of oil level measurement

    Everyone knows the tube that you pour oil down has to be lifted out of it's place so that it goes from lying down to standing up. right ?

    Are you guys pulling the fill tube up ? Because if you're not the oil that you pour in will sit in the tube until you drive and it works its way down.

    Re: Low accuracy of oil level measurement

    Quote:
    STRADALE said:With my 996 Turbo you could only measure the oil level while the car was running and up to temp. Now with the 997 you can only measure with it off. But I think there may be a big difference between measuring when it's off overnight (measuring cold) and measuring after a drive or at a gas station.


    996TT has a dry sump - that's why you have to measure with the car idling and warm...

    Re: Low accuracy of oil level measurement

    Quote:
    STRADALE said:
    Everyone knows the tube that you pour oil down has to be lifted out of it's place so that it goes from lying down to standing up. right ?

    Are you guys pulling the fill tube up ? Because if you're not the oil that you pour in will sit in the tube until you drive and it works its way down.



    Yes. This does not seem to have any effect.

    Re: Low accuracy of oil level measurement

    I've also had problems with accuracy and overfilled the thing twice now. My service tech. told me overfilling is the WORST thing to do to your car and advised me to keep it at 3 bars and refill it 1/2 quart only when it shows 2 bars. Basically he told me not to fill it to the 4th bar. Its important of course to be perfectly level and check it 2 or 3 times to confirm true level before adding oil. At 7500 miles oil level is stable and barely moves but at first I was going WTF? I'll take the oil stick over this digital readout anyday!

     
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