Complete Oil Specifications
Your 2023 Audi Q8’s 3.0L TFSI V6 requires 5W-40 full synthetic oil meeting the Volkswagen Group VW 502.00 / 505.00 specification. These are Audi’s proprietary VW Group standards — they are stricter than generic API or ACEA ratings and are the only specifications that should be used to maintain warranty coverage.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 5W-40 |
| API Rating | VW 502.00 / 505.00 |
| ILSAC Rating | VW 502.00 |
| Capacity (with filter) | 6.9 quarts |
| Oil Filter | Audi/VW 06M115403Q |
| Normal Interval | 10000 miles |
Why 5W-40 is Critical for This Engine
The Q8’s EA839 3.0 TFSI uses chain-driven timing, twin-scroll turbocharging, and Audi’s valvelift system. VW 502.00 mandates a specific additive chemistry compatible with Audi’s catalytic converters and engine internal coatings. A thinner oil such as 0W-20 will not maintain minimum hydrodynamic film thickness in the connecting-rod bearings at high sustained RPM — a known vulnerability of this engine family when under-lubricated.
Using incorrect oil will:
- ❌ Risk connecting-rod bearing failure if minimum film thickness drops below design limits
- ❌ Violate Audi warranty terms — VW Group specification oils are contractually required
- ❌ Cause sludge buildup if generic API SN oils without VW approval are used
Severe Service Check
You need the 5000-mile interval if you:
- Drive in sustained high-speed motorway conditions at 80+ mph regularly
- Tow at or near the Q8’s rated capacity
- Use Sport or Dynamic driving mode aggressively in hot weather
- Operate in ambient temperatures consistently above 95°F
Installation Details
Drain Plug Torque: 26 ft-lbs
The Q8 uses an aluminium oil pan. Replace the metal drain plug gasket at every oil change — reusing a compressed gasket risks a slow leak.
OEM Filter: Audi/VW 06M115403Q
Aftermarket Filters:
-
Mann-Filter W 811/80
-
Mahle OC 1039
-
Bosch 0451103369
Pro Tip: The Q8 uses a cartridge-style filter in a housing on the front of the engine. An 86 mm or 36-flute oil filter socket wrench is needed to remove the housing cap without damage.
FAQs
What oil does a 2023 Audi Q8 3.0L TFSI take? 5W-40 full synthetic oil meeting VW 502.00 / 505.00 standards.
How many quarts does it need? 6.9 quarts with a new filter, 6.3 without.
Can I use 0W-40 instead of 5W-40? Yes, if the 0W-40 also carries VW 502.00 or 503.01 approval. The specification matters more than the exact viscosity grade.
Does brand matter if the VW approval is on the label? No — any oil carrying the VW 502.00 or 502.00/505.00 approval from any major brand is acceptable.
How often should I change the oil? Every 10000 miles under normal conditions, or 5000 miles under towing or sustained performance use.