Is this normal?
- Thread starter Skorchio
- Start date
Porsche state that 1 litre per 1K kilomteters (600) miles is within normal tolerances.
The sludge is moisture within the oil system. The can be caused by condensation or, in more extreme circumstances, a faulty head gasket leaking coolant into the oil ways.
I would recommend giving the car a really good run so the oil gets up to normal working temperature for an extended period. This should evaporate out most of the moisture. Take a look at it again then.
Regards,
Clive.
The sludge is moisture within the oil system. The can be caused by condensation or, in more extreme circumstances, a faulty head gasket leaking coolant into the oil ways.
I would recommend giving the car a really good run so the oil gets up to normal working temperature for an extended period. This should evaporate out most of the moisture. Take a look at it again then.
Regards,
Clive.
I have 2006 MY 997 4s and my filler looks the same. Over 5K miles I have seen the oil level drop from full to about 3/4 full but not desperate for a top up, so not sure what consumption this relates to but is obviously burning a little. I was told that a little sludge is normal especially if you do short journeys but is only a problem if it builds up a lot and obviously if you see any oil in the water header tank. My car has done 23K miles.
Out of interest what MPG do you get on average as I struggle to get over 18 mpg over a long term.
Out of interest what MPG do you get on average as I struggle to get over 18 mpg over a long term.
My previous 2S easily averaged 24mpg over 18,000 miles (I never bothered zeroing the computer) including a few track days.
STiG911
New member
Yup, this is almost always about doing short journeys as the oil doesn't heat up to normal temperature for long enough. Like someone else has suggested, take her out for a long (30 miles at least) run, making sure you get to 6k rpm a few times to wring out the cobwebs. While these engines have the ability to pootle about at no more than 3k rpm day-in day-out, peak power is produced at 6400rpm, and repeated gentle driving does them no favours.
They need taking out for a good spanking on occasion - which is one of the best things about owning one in the first place!
They need taking out for a good spanking on occasion - which is one of the best things about owning one in the first place!
option911
New member
I know mine is air cooler, but principle is still the same. I refuse to get my car out unless I am doing a minimum of 20 mile run, that way the oil is up to temp and the thermostat has opened to the oil cooler rad. By doing this, water and condensation is evaporated off and the oil remains clean and pure; i have never seen any sludge in my tank. I despair when I see the ladies (mainly 996s) using the car to pick up the children from school, thats 4 runs per day of about 1 mile duration each way, I hate to think what state the oil and engines are in?
If there's no blue smoke coming out the exhausts I wouldn't worry really. My first C2S, which was the same vintage as the OP, used about that amount of oil from new and never got any better. The second with the DFI engine used a similar amount, maybe a bit less and the current turbo (DFI) hasn't used a drop in 20,000 miles! Explain that! They do seem to vary a huge amount for some unknown reason.
Hi Guys sorry for the delay.
I use the car for work and have covered about 2500 miles in 2 months due to allot of motorway miles.
I think the previous owner must have done allot of short journeys. I will clean out the gunk and see if it comes back. Maybe once it has the next oil service i will see a reduction in use due to new oil with no moisture.
Thanks all for the help.
I use the car for work and have covered about 2500 miles in 2 months due to allot of motorway miles.
I think the previous owner must have done allot of short journeys. I will clean out the gunk and see if it comes back. Maybe once it has the next oil service i will see a reduction in use due to new oil with no moisture.
Thanks all for the help.
Hi
I just had my 07 Turbo for two weeks 26K miles, when I got it the oil filler looked like that to and also needed 1.5 litres of oil
So assume its only done short journeys during the winter. It was last service in nov11 and has only done 1000 miles in the last 8 months .
Why any one has one of these and doesnt change the oil after the winter beats me .I usually do it before and after.
The other intersting thig I have noticed is that the water level is on minimum .I topped it up went for a good run and the next morning its back to min
and never dropped any more. No sigighns of any oil in the coolant but difficult to see if there is coolant in the oil with no dipstick hence the need for an oil change.
Has any one else found this ?
On the 996 4s when the level dropped it was a rad cracked , Hope history isnt repeating itself .
Mike
I just had my 07 Turbo for two weeks 26K miles, when I got it the oil filler looked like that to and also needed 1.5 litres of oil
So assume its only done short journeys during the winter. It was last service in nov11 and has only done 1000 miles in the last 8 months .
Why any one has one of these and doesnt change the oil after the winter beats me .I usually do it before and after.
The other intersting thig I have noticed is that the water level is on minimum .I topped it up went for a good run and the next morning its back to min
and never dropped any more. No sigighns of any oil in the coolant but difficult to see if there is coolant in the oil with no dipstick hence the need for an oil change.
Has any one else found this ?
On the 996 4s when the level dropped it was a rad cracked , Hope history isnt repeating itself .
Mike
Mike,
Ongoing reduction in water level often indicates a leak somewhere and a 5 year old 997 is prone to radiator defects.
Debris enters through the air ducts and collects in the corners, right at the back, holding moisture and causing corrosion to the aluminium matrix. There are several exposed rads. in the front of the 911 and one ore more could be affected. Sorry to be glum! [
]
If you're OK with DIY, there are useful instructions on how to remove the front PU so you can check the rads. yourself.
See http://www.porscheclubgbforum.com/tm.asp?m=613041 (also gives details of fitting mesh to the air intakes).
Hope this helps.
Clive
Ongoing reduction in water level often indicates a leak somewhere and a 5 year old 997 is prone to radiator defects.
Debris enters through the air ducts and collects in the corners, right at the back, holding moisture and causing corrosion to the aluminium matrix. There are several exposed rads. in the front of the 911 and one ore more could be affected. Sorry to be glum! [
]If you're OK with DIY, there are useful instructions on how to remove the front PU so you can check the rads. yourself.
See http://www.porscheclubgbforum.com/tm.asp?m=613041 (also gives details of fitting mesh to the air intakes).
Hope this helps.
Clive
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