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Home >> Audi >> 2025 >> S4 Premium >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Cooling System (6-Cylinder Direct Fuel Injection 2.9L; 3.0L 4V TFSI Engine) >> 19 Cooling System >> Cooling System/Coolant >> Coolant, Draining And Filling >> Coolant, Draining And Filling, 2.9L Engine >> Coolant Mixture Ratio

Coolant Mixture Ratio

CAUTION:

There is a risk of corrosion damage from an unsuitable mixture of water and coolant additive.

  • For optimal corrosion protection distilled water must be used.