Use whatever grade is printed in the user manual or on the oil cap. Synthetic and dinosaur oil can be interchanged as desired, but should not be intermixed. If you have high mileage, you could step up one grade. I.E OEM 5w/30, 120k miles you could use 5W/40.
The engine oil specification for 2000 Audi 2.8 V6 Quattro is: - Cold climate: 5W/30 or 5W/40 semi-synthetic - Moderate climate: 10W/30 or 10W/40 semi-synthetic - Hot climate: 10W/40 semi-synthetic
Long life service = MY 2000 ----> Engine oil grade: 0W/30 synthetic oil to VW specification 503.00/W12 and turbo engines above 154 kW / 200 PS = 503.01
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