Oil Usage Poll
Registered User
Joined: Nov 2006
Posts: 546
From: Birmingham, AL
Rep Power: 41
My car with about 12k on it uses about a quart every 1500 miles and that is an improvement from where it was at 6K.
Interesting side note; the Porsche 250 race is out at Barber's this weekend and one race team was using the Dealerships facility.
I asked them how long their engines lasted? 3 races or 750 miles. I will ask them over the weekend how they break them in.
Interesting side note; the Porsche 250 race is out at Barber's this weekend and one race team was using the Dealerships facility.
I asked them how long their engines lasted? 3 races or 750 miles. I will ask them over the weekend how they break them in.
Registered User
Joined: Aug 2006
Posts: 868
From: earth
Rep Power: 0
2007 997S 6 speed
12/2006 production date
3800 miles+/-
mostly short trips but driven fairly aggressively in hot climate
1 quart since new
If my car was burning +/- a quart every 1000 miles I'd be a very unhappy camper...
12/2006 production date
3800 miles+/-
mostly short trips but driven fairly aggressively in hot climate
1 quart since new
If my car was burning +/- a quart every 1000 miles I'd be a very unhappy camper...
Last edited by 500; Nov 4, 2007 at 10:44 PM.
Registered User
Joined: Jul 2006
Posts: 3,800
From: Tampa
Rep Power: 234
Why is my car NOT burning oil or at least very little? Very interesting. I've done 1 oil change at 7000 miles and before that I added a little over .25 quart and from 7000 to 9000 miles I am in the middle of the bar graph. 1 auto cross and 3 hard DE's plus highway and normal driving...not babying it nor running to red line at every stop light.
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Joined: Aug 2006
Posts: 868
From: earth
Rep Power: 0
Originally Posted by mdrums
Why is my car NOT burning oil or at least very little? Very interesting. I've done 1 oil change at 7000 miles and before that I added a little over .25 quart and from 7000 to 9000 miles I am in the middle of the bar graph. 1 auto cross and 3 hard DE's plus highway and normal driving...not babying it nor running to red line at every stop light.
Last edited by 500; Jul 18, 2007 at 10:14 PM.
Registered User
Joined: Jul 2006
Posts: 3,800
From: Tampa
Rep Power: 234
Originally Posted by 500
If you're in the middle of the bar graph 2000 miles after your 7000 mile change then you are burning oil especially since you're now well past the B/I period... although the amount is relatively light especially compared to some others.
Thread Starter
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Registered User
Joined: Nov 2003
Posts: 426
From: Ridgefield, CT
Rep Power: 52
Good point 500, as I've been trying to keep oil level at top bar, rather than letting it fall. If it falls to half-way, my experience has been that it takes about .75 quarts to bring the guage back to full.
Registered User
Joined: Apr 2006
Posts: 728
From: Alpharetta, GA
Rep Power: 80
2007 C2S
In service date: 8/6/06
Miles to date: ~9500
Oil added to date: .25-.5 qt (around 2500 miles)
Ran it to 7k RPM leaving the dealer @ purchase (after letting oil warm to 200)
I recently stuck it on the dyno and pulled a respectable 313 rwhp. Runs like a champ. I did the 1 year service and oil change Monday.
In service date: 8/6/06
Miles to date: ~9500
Oil added to date: .25-.5 qt (around 2500 miles)
Ran it to 7k RPM leaving the dealer @ purchase (after letting oil warm to 200)
I recently stuck it on the dyno and pulled a respectable 313 rwhp. Runs like a champ. I did the 1 year service and oil change Monday.
Registered User
Joined: Aug 2005
Posts: 258
From: Los Gatos, CA
Rep Power: 31
2006 997 S 13 months old and 13K miles:
Before first oil change at 8k miles I added 2/3 of a quart, most of it during the break in period.
After first oil change I haven't added a drop, and I'm 1 bar below top right now.
Don't add oil until your half or lower, and do it slowly and keep re-checking the oil level while you do it.
HTH!
Before first oil change at 8k miles I added 2/3 of a quart, most of it during the break in period.
After first oil change I haven't added a drop, and I'm 1 bar below top right now.
Don't add oil until your half or lower, and do it slowly and keep re-checking the oil level while you do it.
HTH!
Registered User
Joined: Dec 2006
Posts: 110
From: NY
Rep Power: 25
2 quarts in 5000 miles
'07 C2S. Break in by the book, 4 track days since break-in, 5k miles in total. Only added 2 quarts.
Oil consumption bothers me much less than heavy smoke at startup last time I let the car sit for a week.
Serge
Oil consumption bothers me much less than heavy smoke at startup last time I let the car sit for a week.
Serge
Thread Starter
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Registered User
Joined: Nov 2003
Posts: 426
From: Ridgefield, CT
Rep Power: 52
Oil Usage Poll Update
For those looking for a bit more data, please have a look at Rennlist.com in the 997 forum and where we have over 100 responses to date, with some very interesting data.
Again, the forum is a community, not designated for the "sole purpose" of helping the pollster. It is unfortunate that my original post was discouraged as being selfish.
Gundo.
Again, the forum is a community, not designated for the "sole purpose" of helping the pollster. It is unfortunate that my original post was discouraged as being selfish.
Gundo.
Polls like this are often for the sole purpose to help the pollster to sleep better at night seeing that there are others who experience the same problem. The fact is, no matter how many Porsche's you find that burn a measurable amount of oil (non track) you have a problem.
The engine was not designed to burn oil and burning oil is ALWAYS bad for the engine as well as it robs the engine of power. In many cases, burning oil on a NA engine is due to using the incorrect oil and driving the vehicle like it is a show car, allowing your cylinders to coke up and rings not to seal. This creates tremendous crankcase pressure forcing oil into the intake, reducing the effective octane level of the fuel. Long term negative effects is carbon buildup in areas out of the airflow path, hotter engine temps, etc.
Rather than looking to see that your engine is like every other Porsche, it would be time better spent fixing the problem. I have found very few flat six NA engines that I couldn't stop all measurable oil loss without breaking into the engine.
Remember, synthetic oil is not amume from sludge and carbon buildup as the marketer's would like you to believe. Too thin an oil is more prone to this as it is effected more by ring leakage and crankcase pressure.
The engine was not designed to burn oil and burning oil is ALWAYS bad for the engine as well as it robs the engine of power. In many cases, burning oil on a NA engine is due to using the incorrect oil and driving the vehicle like it is a show car, allowing your cylinders to coke up and rings not to seal. This creates tremendous crankcase pressure forcing oil into the intake, reducing the effective octane level of the fuel. Long term negative effects is carbon buildup in areas out of the airflow path, hotter engine temps, etc.
Rather than looking to see that your engine is like every other Porsche, it would be time better spent fixing the problem. I have found very few flat six NA engines that I couldn't stop all measurable oil loss without breaking into the engine.
Remember, synthetic oil is not amume from sludge and carbon buildup as the marketer's would like you to believe. Too thin an oil is more prone to this as it is effected more by ring leakage and crankcase pressure.
Registered User
Joined: Apr 2007
Posts: 1,352
From: long island
Rep Power: 86
For those looking for a bit more data, please have a look at Rennlist.com in the 997 forum and where we have over 100 responses to date, with some very interesting data.
Again, the forum is a community, not designated for the "sole purpose" of helping the pollster. It is unfortunate that my original post was discouraged as being selfish.
Gundo.
Again, the forum is a community, not designated for the "sole purpose" of helping the pollster. It is unfortunate that my original post was discouraged as being selfish.
Gundo.
Registered User
Joined: May 2006
Posts: 1,550
From: Jersey Shore
Rep Power: 87
I am old enough to remember the Kawasaki 500 two strokes smoking (quite literally) the competition in the 70's. Were they tight? no. Did they burn oil? yesiree. Were they fast? youbetcha. As I remember they used exactly 9.5 gals of oil every 15,000miles. And thats all I got to say about dat.
OMGF you are talking about a two stroke
2 strokes use pre mix oil for lubrication. my 2007 997 with 3,000 miles and 1 oil change never added oil. 