saudio

the normal range for a 997.1 turbo?

Mine uses a bit, but I don't see any smoke or leaks.

993MAN

Normal for a Turbo.

Relax

CTDan

I know one of the manuals I read said that as much as a quart every 600 miles could be considered normal.

nzskater

If I'm driving it hard, I can use up to 500ml every 1000km. If it's just cruising it doesn't use anywhere near as much.

saudio

Well that's comforting. I think mine is using a quart about every 2000-3000 miles. Not used to having a modern car that significant oil usage is normal.

therock88

Performance car...high output. Tolerances are different and oil seepage to be expected...also horizontally opposed engine...

DC

Ruskiy

Mine does consume about 1QT every 700-1200 miles. I know it's a wide range but it's less if you drive normally and more when in boost and love spirited driving, which would be me.
I have a 13psi Supercharged Honda S2000 and it hardly consumes any oil after I started using *MOTUL 6100 Synergie+ 10W-40 as oppose to MOBIL EP 10W30. I almost never have to top it off now.

So yeah, it's a bit shocking and unusual for me to see Mezger engine consume so much. Going from Mobil to MOTUL 8100 X-cess 5W-40 didn't improve my oil consumption on the Turbo. I am too much of a wuss to try 50 weight.

*I am NOT suggesting that you use 6100 Synergie+ on your Turbo, but just telling you that my Honda stopped burning oil from it which is what that oil was designed to do. 6100 line is a blend and not a FULL true-synthetic. 8100 line of MOTUL oils are true synthetics.

Quadcammer

that seems very high from what I've seen.

My car uses a quart every 4k to 5k miles, towards the lower end when you're driving it harder, but thats it.

1qt per 1000 miles or less would have me a bit concerned (unless you're a track rat)

Ruskiy

Yeah, it's weird. I will try to keep track of it my next oil change to get a more accurate reading on the amount and interval to see if I'm over exaggerating.

I'll report back in a few months.

911mhawk

+1^
Other newer performance cars allow for copious oil consumption too and also give you a cool electric readout you can go mental over-checking with.

Macster

Concern over oil consumption was not what prompted my switching from Mobil 0w-40 to Mobil 5w-50 (not a typo for 15w-50!) with my 996 Turbo engine but oil consumption didn't change.

About the only thing that affects oil consumption is how I drive the car. 4K+ miles at freeway speeds (road trip) there was hardly any oil consumption. But over 5K miles (I change the oil every 5K miles) toss in a couple of spirited drives on a mountain road with lots of hard acceleration and hard braking and oil consumption goes up. It almost seems the oil level drops faster than the fuel tank level.

I believe the engine proper is not consuming the oil, that is the oil is not making it past the rings or past the valve stem seals and through the valve guides, but the bulk of the oil is consumed as vapor courtesy of the considerable oil vapor a hardworking DOHC (and turbo-charged too boot) engine makes and the AOS is unable to remove.

Another source of the oil can be the turbo seals.

There are things to worry about and things not to worry about. I don't worry about some oil consumption from my Turbo's engine.