Metallic-Force

You mean supercharger? I'm not sure about that, but I don't think it's true for turbos though, since they practically use the back pressure to push the car, meaning it uses the "wasted" air from the engine, this is why everyone uses is it, its quite efficient. However, oil consumption is quite high for CVT engines, they need earlier and more frequent services.

mikem33

CVT is not an engine technology; it's a transmission technology. The transmission has no effect on engine oil consumption.
As far as supercharged vs. turbocharged, from the engine's perspective both supply air at higher pressure than naturally aspirated engines. Turbos compress the air via a turbine spun by exhaust gases, superchargers via a belt hooked up to a compressor. The engine sees higher volume of air for a given engine size, thus increasing both power and stress on the engine. Both the turbo and the supercharger are external to the engine itself.

I'm not sure I buy the theory that turbos burn more oil than N/A engines if properly designed; I've had NA cars that burnt a lot of oil (1Qt/ 1500 mi) and supercharged engines that burnt absolutely no oil in a 5K replacement interval.

In any case, best to ask the dealer what they consider normal. Most brands will not do anything for a car that burns less than 1qt/1000 miles or so, unless there's an oil leak that is visible.

Metallic-Force

I feel stupid for thinking so, but I know I read somewhere that the CVT A6 requires more frequent oil services than the 3.0T. Maybe transmission oil?

I went to my dealer, turns out it was in fact low on oil. They put a qrt and sent me on my way, free of charge.

Funny thing is, they have the oil behind the service podium outside, seems everyone is coming to them for it.

Inyoury

Turbocharger, not supercharger. Difficult to type on my iPhone. My car isn't US specs and I have a 8 speed, not CVT. burning more oil didn't make any sense to me, but I wasn't sure so I posted here about it.

dht34

My girlfriend's A6 is at 8k miles and the oil level is below the min line. Car was serviced at 5k miles. Her commute is usually 70-80 miles round trip per day in stop and go traffic. My guess is the traffic contributed to the oil consumption. Dealer says the A6 is still in break in period and with the type of driving, its probably normal and its would be ok to add 1/2 qt of oil in.

Seems kinda early to add oil, but hey, better safe than sorry.

Question, was told Castro or Pennzoil 5w-40 fully synth oil was ok to add, any recommendations besides those two?


ps. my A6 is going strong with oil levels full on the MMI.

dht34

Seems 5w-40 isn't readily available in the auto part stores. Manual does say 5w30 or 0w40 can be substituted.

mikem33

Make sure the oil is 502.00 certified; there are a couple brands that make oil specifically certified for Audi Long Life.
I bought my oil at o'reilly's (used to be Kragen auto parts). Most auto parts stores will carry at least one oil that will be certified, but most gas stations and stores like wal-mart or target do not carry these. You'll have to look at the label to find if they are 502.00; most of the employees I asked had no idea about the certification, or whether they sold the oil. The one I bought is Mobil.

manishaudi

Don't the approved Oil vendors also show some sort of VW approved message on the bottle?

spoon2000

Our oil level light came on at just under 4000 miles. I put in a quart of Castrol Edge (formerly Castrol Syntec) Full Synthetic 5W-30.

Just noticed on the bottle that Castol is owned by BP. Boo.

ultrahertz

Yeah, I had very similar experience. My 2012 3.0 seems to be drinking a quart every 3500-4500 miles.