is it ok to always use non-synthetic oil on turbo cars like the A6 audi 2.7T? thanks!?

no, it is not. use only the oil that meets the specifications for your car. should be located in the owners manual. non synthetic oil will lead to engine sludge and engine failure.

no. use synthetic. i use royal purple on my supercharged grand marquis, unless u wanna pay for a new engine then use synthetic.

No, Audi specifies a synthetic for the 1.8T engine and I suspect its a good idea to use it in the 2.7T engine as well, the extra heat of the turbo makes using a conventional oil pretty dicey.

It is definitely NOT ADVISABLE to use a non-synthetic motor oil in your 2.7T. In addition to risking a blown motor, you may also void any kind of warranty you might have.The root of the problem is that your turbo's are cooled by your motor oil and because they are driven by exhaust gases, they are extremely hot!! With a non-synthetic oil, the oil will break down too quickly from the added heat of the turbo. Due to this you could either change your "dino" oil much more frequently (easily 2-3x more frequently) or use the longer lasting fully synthetic oil.Also to help increase the longevity of your oil (and therefore your car's life) please consider that if you drive it even semi aggressively, it's recommended to use either a Turbo Timer, or let your engine run with minimum load on it for 5-15 minutes after a "spirited" drive.WHY: A Turbo Timer keeps your engine running (and therefore oil circulating) even after you remove your keys. Instead of a Turbo Timer you can also let your engine idle for 5-15 minutes after an aggressive run before you shut it off. Alternatively, you can take it really easy for the last 5 miles before reaching your destination. I do this and ensure my rpm's doesn't get much higher than 2k for the last mile or two before I get home.This allows oil to circulate and cool down. If you don't do this then as soon as you shut down your engine, the oil stops circulating and the oil left sitting in the turbo simply cooks and breaks down.HTH.

Use what the manufacturer specifies. I have a non-turbo A6 2.8, which originally had dino, but have switched to synthetic for extra miles between changes. To the best of my knowledge, by comparison, the 2.7T uses synthetic because it runs hotter and puts more demand on the lubricants.

Use Synth - Audi's are know for sludge... which is build up essentually. Stick with what Audi recommends, change it often, dont let it sit unused either. Sludge will build up and eventually damage the engine/turbo.