Just for fun: How often do you add a quart?
 

I've always been curious. Haven't you? I'll start us off:

• I've got a '71 T that's got good leakage/burnage. I add a quart about every 300 miles. :eek:

• I've also got a '90 964 C2. It does a little better. Until recently (it's in the shop for some repairs), I've had to add a quart about every 800 miles. :rolleyes:

Whatchoo got?

My 3.0 liter used to sip...I'd add a quart every 2500 miles.

New 3.3 is in break-in period right now, but so far I haven't had to add any in 600 miles or so. I expect this one to drink a little bit more oil though.

Going on 2500 kms with my 89 3.2 and haven't added any yet,even though i get a few oil spots in my driveway and a whiff of Mobil 1 at traffic lights...

1500 miles, knock on wood.

No oil added between changes here.

George

When it stops leaking... ;>)

my 3.0 required no oil between 3000 mile changes.

my 3.2L does not require oil between changes.

Either nothing or maybe one quart between oil changes on a rebuilt '91 964.

3.0 Oil Usage
 

I have an 80 SC with very little compression in cylinder #2 - but the others are balanced and healthy. The case leaks from several places - I get about a tablespoon per week on the drip pan but I'm sure that I'm dripping more than that under running conditions, as indicated by the smoking tail at stoplights. It's unfortunate, but I'm not ready to replace the motor with a 3.2. Right now, I get about 1500 to 1800 miles on a quart which is pretty good considering the dead cylinder and the leakage.

Same here.

Half to quarter qt every 3000 Miles between changes.

Nothing between changes. *also knock on wood* :D

3500 miles on fresh 3.0 top to bottom rebuild. Drove from Long Island NY to Key West Fl. after the break in oil came out. Brought 3 qts of oil, 3 qts came home. Still nothing added!

1 qt / 800 miles. Some leaks, some burns. 154K miles.

More during track usage.

With Mobil-1 I burned a quart every 1K.

With Swepco I'm not burning any oil between changes.

Mobil -1 , none between changes

"86" 3.2 odometer has 145,000 I use a quart or less every 2,000 to 3,000 miles.

I was jus' wondering about that this very morning.
I haven't had a chance to run her much due to the rain or our schedule, but I took a ride this morning and was a little surprised/dismayed at the size of the wet spot I saw on the garage floor.

I have to check - I've put maybe 600 miles on her this season, and the oil gauge is showing halfway.

it depends on how i drive the car. If i am sitting in L.A traffic and its hot out, plus some spirited driving will mean i need to add a quart every 800 miles, just driving highway means a add a quart every 1000-1500, not too bad.

About 1 qt. per 1,500 miles. More if driven hard, like 1 every 1,200 miles

1/2 to 1 qt. down when I change the oil @ 4000 miles.
190,000 mi on the 3.0L.:D

Don

2002 C4S (36K miles on ODO): 1 quart per ~1K miles (but some of that is definitely leaking due to my RMS/IMS issue...)

1986 3.2 Targa (126K miles on ODO): 1 quart per ~800-1300 miles

1972 914 1.7 (145K miles on ODO): ditto

1972 911T Targa (118K miles on ODO): ????? (I would tell you if I could ever get the damn thing home from TRE)

About every 1000-1500 miles. Getting a little stinky at traffic lights (10w-30).

-Todd

78 3.0 In 7 years I never add any oil @ 3000 mile oil change.

I've got one of those. But, I knew what I was buying. Can you say cheap?

None between changes. '86 3.2, 62K on the odo, Brad Penn 20-50

'72 doesn't leak a drop...someone said it may not be a real Porsche :eek: I wish it would because I think it's a bit overfilled. '69 leaks like a sieve!

My 78 Targa has 170K on it, leaks a little, no smoke at all, needs about 1qt of Mobil 1 every 600 to 800 miles.

I add when it needs it, but not in one quart increments. It probably works out to one quart every 2K - 3K miles, with more "topping off" required after driving in hot weather & heavy traffic.

I put in Brad Penn at the last oil change, about 1K miles ago, and it hasn't needed anymore so far.

I don't know. Never a quart, but a little now and then. I'll get back to you. Right now I'm busy looking for a blow off valve for that guy's Wife.......I feel helpful today! :D

All of my Porsches are super Porsches. I've never had to add a quart of oil to any of them, ever, even after driving hundreds of thousands of miles....

;)

Added a qt today, 1005 since I changed the oil. Using Brad Penn, 3.2 with 112k miles, all original engine, no top end. Not too bad I dont think!

About a quart every 700-800 miles. I have 207K on the engine. Not sure whether a top-end has ever been done.

Has anyone switched to synthetic? I was reading an issue of Excellence recently (it was from'08) and it covered a talk given by a PCA technical director. He said that his 80s Carrera always burned 800 miles/quart, even when new. But after switching to Moblil 1 (I think) he stopped burning oil.

Never heard of this. Of course you can try. Only issue is that synthetics tend to leak more, even cause leaks on a well used older engine.

George

I just did 2,300 miles going to Parade in Colorado. There was a lot of high RPM driving in the mountains. Above 6,000 feet it feels like you are pulling a trailer. I have a 85 Carrera with 131,000 miles and I run Sweepco. I used almost two quarts. Last year on flat ground I went over 1,5000 miles per quart.

One quart Mobil 1 15-50 per 700 miles. 90% freeway driving in our '86 3.2 with 103K miles.

No leaks.

(10w-30)...you're kidding, right?

1 quart around 1000 miles. Mine is at 152K miles, leaks a tiny bit :) and sometimes smoke on startup.
I hate to let the level drop, so I usually add a 1/2 quart at time.

Which brings up the question, how low is too low?

Jay

Quote: "Which brings up the question, how low is too low?"
I would say no lower than the bottom line on the stick, but then the thing holds a couple of well-dead Dinosaurs' worth! I keep it midway like most.