2021 Audi A6 Quattro Fluids

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Keep Your 2021 Audi A6 Quattro in Top Shape with Quality Fluids

Whether you’re repairing or upgrading your Fluid, using high-quality parts is key to keeping your 2021 Audi A6 Quattro looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including AWD Fluid, Brake Fluids, and Differential Lock Actuator Fluid. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Fluids from Trusted Brands

Looking for a reliable Fluid? We’ve got you covered with options from brands you know and trust like Valvoline and Pentosin. For example, Valvoline Fluids start at just $18.99 with an average 4.8 star rating. Pentosin offer similar pricing and quality, backed by strong customer feedback. With over 2,198 reviews and a solid 4.7 star average, you can shop with confidence knowing other Audi A6 Quattro owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2021 Audi A6 Quattro Fluid at Advance Auto Parts is around $28.97, with a range that starts at $9.99 and goes up to $88.99. With 9 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Prestone DOT 5.1 Brake Fluid: Synthetic, High Grade, High Performance Formula For Extreme Braking, 12 oz., AS820-6, Pentosin Dot 4 Lv 5L, 1224204, and Prestone DOT 4 Brake Fluid: Synthetic, High Grade, Prevents Overheating & Brake Fade, 50k miles, 32 oz., AS801Y start at just $15.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Fluid, don’t forget to check out other key components like Coolant/Antifreeze and Transmission Fluids. At Advance Auto Parts, we’re here to help you keep your 2021 Audi A6 Quattro in peak condition, inside and out.

Essential 2021 Audi A6 Quattro Fluids

Lube Gard – Lube Gard Complete Synthetic Power Steering Fluid Multi-Vehicle Formula, 32 oz., 23232 (Part No.23232)

Lube Gard Complete Synthetic Power Steering Fluid Multi-Vehicle Formula, 32 oz., 23232

from

$21.49
Complete Synthetic Power Steering Fluid formulated for use in American, European and Asian Vehicels. Electric Power Steering Fluid Compatible.
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Pentosin – Pentosin Automatic Transmission Fluid – 5 Liter Bottle, 1058207 (Part No.1058207)

Pentosin Automatic Transmission Fluid - 5 Liter Bottle, 1058207

from

$131.99
Pentosin Automatic Transmission Fluid – 5 Liter Bottle, 1058207.
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Valvoline – Valvoline Restore & Protect Automatic Transmission Fluid 1 Qt, 913031 (Part No.913031)

Valvoline Restore & Protect Automatic Transmission Fluid 1 Qt, 913031

from

$15.99
Most transmissions are automatic. Now, so is choosing an ATF. Introducing Valvoline Restore & Protect Automatic Transmission Fluid, a premium full synthetic ATF suitable for use in 95 percent of vehicles. Leveraging innovation from our groundbreaking Valvoline Restore & Protect Motor Oil, the same trusted technology is now available in transmission care. Restore & Protect ATF provides up to 97 percent deposit removal with Active Dissolve Technology, so there’s no need to add a transmission cleaner. Valvoline’s full synthetic formula outperforms conventional ATF with outstanding protection against friction, thermal stability and transmission breakdown. The high performance multi,vehicle protection revitalizes, defends and maximizes automatic transmission life. Whether it’s a Ford, GM, Toyota, Honda, Hyundai, Subaru, BMW, Mercedes, VW and more, you get exceptional performance in any driving condition. For unsurpassed deposit removal and smoother shifting, trust Valvoline Restore & Protect Full Synthetic Automatic Transmission Fluid, from the number 1 ATF brand.
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Valvoline – Valvoline MaxLife Multi-Vehicle Full Synthetic Automatic Transmission Fluid (ATF), 5 Gallon Box, 881051 (Part No.881051)

Valvoline MaxLife Multi-Vehicle Full Synthetic Automatic Transmission Fluid (ATF), 5 Gallon Box, 881051

from

$126.99
Valvoline MaxLife Multi-Vehicle ATF is a full-synthetic formulation with advanced additives to prevent the major causes of transmission breakdown and help extend transmission life. Developed to help prevent leaks, maximize transmission performance, reduce transmission wear, and maintain smooth shifting longer than conventional fluids. It is suitable for use in a broad range of ATF applications including most Ford, GM, Toyota, Honda, Nissan, Hyundai, BMW, Mercedes, Volvo, VW & Audi. Recommended for use in the following applications: GM DEXRON-II, DEXRON-III, DEXRON-VI, Ford MERCON LV, Toyota/Lexus Type T, T-II, T-IV, WS, Honda/Acura, ATF-Z1, Nissan/Infiniti Matic-D, Matic-J, Matric-K, Matic-S, Hyundai/Kia SP-II, SP-III, SP-IV, SPH-IV, BMW 7045E, ETL 8072B, LA2634, LT71141, Allison C-4, Mercedes Benz NAG-1, Volvo 1161521, 1161540, 97340, 1273.41, and VW/Audi G-052-025-A2, G-052-162-A1. For CVT applications Valvoline recommends Valvoline Full Synthetic CVT Fluid. CURRENTLY UNABLE TO SHIP THIS PRODUCT TO CUSTOMERS LOCATED IN CALIFORNIA. Volume: 5 gallons.
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Valvoline – Valvoline High Performance Transmission & Differential Gear Oil: Conventional 75W-90, 1 Quart, VV820 (Part No.VV820)

Valvoline High Performance Transmission & Differential Gear Oil: Conventional 75W-90, 1 Quart, VV820

from

$13.99
Valvoline High Performance Synthetic Gear Oil is the thermally stabile extreme pressure lubricant that offers outstanding protection for gearboxes and differentials in passenger cars, light trucks, and sport utility vehicles. Combined with high quality synthetic base oils, our formula’s superior additives help reliably safeguard against severe temperatures, shock loads, foaming, scuffing, scouring, corrosion and pitting in high load, high torque and high horsepower conditions. Can be used in conventional and limited slip hypoid differentials where GL-5 is specified as well as non-synchronized manual transmissions that require GL-4. Protect your gears with Valvoline, the #1 gear oil brand. Volume: 1 quart.
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Prestone – Prestone MAX Power Steering Fluid: European Vehicles, With Stop Leak, Enhances System Life, 100k miles, 12 oz., AS278 (Part No.AS278)

Prestone MAX Power Steering Fluid: European Vehicles, With Stop Leak, Enhances System Life, 100k miles, 12 oz., AS278

from

$14.99
Prestone MAX European Vehicles Power Steering Fluid (PSF) + Stop Leak maximizes and increases system life + the power to stop leaks. Stop Leak additives renew, restore and condition seals in the power steering system. These seals harden and shrink over time which are the likely cause of leaks. This formula is also great at preventing leaks by rejuvenating seals before they leak. This synthetic fluid is designed with 2X Anti-wear System Protection, which means more protection against pump failure, squeals and clogs. 100,000 mile fluid life, 2X more than conventional fluid, extends the time between replacement. This fluid is formulated for European vehicle manufacturers: Audi, BMW, Jaguar, Mini, Porsche, Mercedes, Saab, Volvo, Volkswagen and others. Many cars 2006 and newer use synthetic based fluids for longer life and better protection. Conventional and synthetic fluids can be mixed but performance and replacement intervals are reduced by the conventional fluid.
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Valvoline – Valvoline Transmission & Differential Gear Oil: Full Synthetic 75W-90, 1 Gallon, 882505 (Part No.882505)

Valvoline Transmission & Differential Gear Oil: Full Synthetic 75W-90, 1 Gallon, 882505

from

$62.99
Valvoline SAE 75W-90 Full Synthetic Gear Oil provides the ultimate gear protection in hypoid rear differentials and non-synchronized manual transmissions. Engineered to outperform, our detergent package-based formulation contains Full Synthetic base stocks and special additives that help protect parts from rust and corrosion while providing exceptional high and low temperature protection and excellent thermal stability, especially in demanding driving situations such as towing and off-roading. It contains an extreme pressure additive for better load carrying capacity, wear resistance additives that assist in protecting gear teeth, a limited slip additive for optimal clutch pack performance, and an anti-foaming agent for better lubrication and service life. Valvoline SAE 75W-90 Full Synthetic Gear Oil is recommended for use in axle applications requiring factory-fill or drain-and-fill levels for limited slip performance. Protect your gears with Valvoline, the No. 1 gear oil brand. Volume: 1 gallon.
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Prestone – Prestone DOT 4 Brake Fluid: Synthetic, High Grade, Prevents Overheating & Brake Fade, 50k miles, 32 oz., AS801Y (Part No.AS801Y)

Prestone DOT 4 Brake Fluid: Synthetic, High Grade, Prevents Overheating & Brake Fade, 50k miles, 32 oz., AS801Y

from

$15.99
Prestone DOT 4 Motor Vehicle Brake Fluid delivers enhanced performance vs. DOT standards, benefitting all vehicles calling for DOT 4. This synthetic fluid starts with a higher dry boiling point than the DOT minimum standard to protect against overheating, brake fade and performance decline due to water absorption. This extended life (50,000 mile) fluid is also formulated to prevent corrosion of all metals within the braking system.  This formula is safe to use in all DOT 4 braking systems (ABS, disc or drum) and can mix with any DOT 4 fluid.  It is recommended to only use the DOT fluid specified for your car, as using a different DOT product can affect the boiling point or replacement interval if the wrong fluid is used.
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Prestone – Prestone MAX DOT 4 Brake Fluid, Synthetic, Highest Grade, 75,000 Mile, 32 fl. oz., AS810 (Part No.AS810)

Prestone MAX DOT 4 Brake Fluid, Synthetic, Highest Grade, 75,000 Mile, 32 fl. oz., AS810

from

$17.99
Prestone MAX DOT 4 Motor Vehicle Brake Fluid is our highest grade formula, maximizing performance vs. DOT standard. Prestone MAX is our best brake fluid at protecting against overheating and brake fade. With 75,000 mile fluid life, our longest life fluid has 1.5X more miles between replacement than regular Prestone DOT 3. Prestone MAX has superior performance in severe braking conditions when compared to regular Prestone DOT 4, which means even more piece of mind about the braking system. This synthetic fluid starts with our highest dry boiling point giving our best protection against performance decline due to water absorption. Prestone MAX DOT 4 is safe to use in all DOT 4 braking systems, ABS, disc or drum, and can mix with any DOT 4 fluid. Mixing Prestone MAX with other fluids will lower the performance rating for miles and boil points, for best results replace completely with Prestone MAX DOT 4. It is recommended to only use the DOT fluid specified for your car. Using a different DOT product can affect the boiling point or replacement interval if the wrong fluid is used.
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Pentosin – Pentosin Super Dot 4 5L, 1204204 (Part No.1204204)

Pentosin Super Dot 4 5L, 1204204

from

$72.99
Pentosin Super DOT 4 is a brake fluid of superior quality for universal use in modern brake systems and ideal for vehicles with ABS systems. Pentosin Super DOT 4 offers safety against vapor lock; it has excellent resistance to absorbing and retaining water and provides superior corrosion resistance.
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Prestone – Prestone DOT 5.1 Brake Fluid: Synthetic, High Grade, High Performance Formula For Extreme Braking, 12 oz., AS820-6 (Part No.AS820-6)

Prestone DOT 5.1 Brake Fluid: Synthetic, High Grade, High Performance Formula For Extreme Braking, 12 oz., AS820-6

from

$18.99
Prestone DOT 5.1 Motor Vehicle Brake Fluid delivers enhanced performance vs. DOT standards and is designed to handle the most extreme braking situations. Prestone DOT 5.1 is a high performance formula for extreme braking situations like racing. Formulated to protect against overheating and brake fade with a formula that exceeds DOT standards. This synthetic extended life fluid starts with higher dry boiling point vs. DOT standard protecting against performance decline due to water absorption. This formula is safe to use in all DOT 5.1 braking systems, ABS, disc or drum, and can mix with any DOT 5.1 fluid. It is recommended to only use the DOT fluid specified for your car. Using a different DOT product can affect the boiling point or replacement interval if the wrong fluid is used.
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Prestone – Prestone DOT 4 Brake Fluid: Synthetic, High Grade, 50,000 Mile, 12 fl. oz., AS800Y (Part No.AS800Y)

Prestone DOT 4 Brake Fluid: Synthetic, High Grade, 50,000 Mile, 12 fl. oz., AS800Y

from

$9.99
Prestone DOT 4 Motor Vehicle Brake Fluid delivers enhanced performance vs. DOT standards, benefitting all vehicles calling for DOT 4. This synthetic fluid starts with a higher dry boiling point than the DOT minimum standard to protect against overheating, brake fade and performance decline due to water absorption. This extended life (50,000 mile) fluid is also formulated to prevent corrosion of all metals within the braking system.  This formula is safe to use in all DOT 4 braking systems (ABS, disc or drum) and can mix with any DOT 4 fluid.  It is recommended to only use the DOT fluid specified for your car, as using a different DOT product can affect the boiling point or replacement interval if the wrong fluid is used.
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Prestone – Prestone MAX DOT 4 Brake Fluid, Synthetic, Highest Grade, 75,000 Mile, 12 fl. oz., AS815 (Part No.AS815)

Prestone MAX DOT 4 Brake Fluid, Synthetic, Highest Grade, 75,000 Mile, 12 fl. oz., AS815

from

$9.99
Prestone® DOT 4 Motor Vehicle Brake Fluid delivers enhanced performance vs. DOT standards, benefitting all vehicles calling for DOT 4. This synthetic fluid starts with a higher dry boiling point than the DOT minimum standard to protect against overheating, brake fade and performance decline due to water absorption. This extended life (50,000 mile) fluid is also formulated to prevent corrosion of all metals within the braking system. This formula is safe to use in all DOT 4 braking systems (ABS, disc or drum) and can mix with any DOT 4 fluid. It is recommended to only use the DOT fluid specified for your car, as using a different DOT product can affect the boiling point or replacement interval if the wrong fluid is used.
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Pentosin – Pentosin Dot 4 Lv 5L, 1224204 (Part No.1224204)

Pentosin Dot 4 Lv 5L, 1224204

from

$88.99
Pentosin DOT 4 LV is a special brake fluid of highest DOT 4 performance levels and extremely low viscosity at cold temperatures. It offers safety against vapor lock; it has excellent resistance to absorbing and retaining water and provides superior corrosion resistance. Pentosin DOT 4 LV Brake Fluid is ideal for all modern vehicles with ESP and ABS. DOT 4 LV can be used in all vehicles that require DOT 4 fluid. High safety margin against vapor lock. Long-term resistance to absorbing and retaining water. Superior corrosion resistance. Low viscosity fluid provides excellent flow performance at low temperature.
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Valvoline – Valvoline Restore & Protect Automatic Transmission Fluid 1 Ga, 913033 (Part No.913033)

Valvoline Restore & Protect Automatic Transmission Fluid 1 Ga, 913033

from

$37.99
Most transmissions are automatic. Now, so is choosing an ATF. Introducing Valvoline Restore & Protect Automatic Transmission Fluid, a premium full synthetic ATF suitable for use in 95% of vehicles. Leveraging innovation from our groundbreaking Valvoline Restore & Protect Motor Oil, the same trusted technology is now available in transmission care. Restore & Protect ATF provides up to 97% deposit removal with Active Dissolve Technology, so there’s no need to add a transmission cleaner. Valvoline’s full synthetic formula outperforms conventional ATF with outstanding protection against friction, thermal stability and transmission breakdown. The high performance multi-vehicle protection revitalizes, defends and maximizes automatic transmission life. Whether it’s a Ford, GM, Toyota, Honda, Hyundai, Subaru, BMW, Mercedes, VW and more, you get exceptional performance in any driving condition. For unsurpassed deposit removal and smoother shifting, trust Valvoline Restore & Protect Full Synthetic Automatic Transmission Fluid, from the number 1 ATF brand.
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Valvoline – Valvoline SynPower Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart, VV982 (Part No.VV982)

Valvoline SynPower Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart, VV982

from

$18.99
Valvoline SAE 75W-140 Full Synthetic Gear Oil provides the ultimate gear protection in hypoid rear differentials and non-synchronized manual transmissions. Engineered to outperform, our formulation provides exceptional high and low temperature protection and excellent thermal stability, especially in demanding driving situations such as towing and off-roading. It contains an extreme pressure additive for better load carrying capacity and wear resistance, a limited slip additive for optimal clutch pack performance, and an anti-foaming agent for better lubrication and service life. It’s recommended for conventional rear axles and transmissions requiring EP gear lubes under high speed, high load, high torque and high horsepower conditions. Volume: 1 quart.
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Valvoline – Valvoline Flex 75W140 Extended Protection Synthetic Gear Oil, Quart, 902150 (Part No.902150)

Valvoline Flex 75W140 Extended Protection Synthetic Gear Oil, Quart, 902150

from

$25.99
You asked, we listened. DIYers said they wanted a premium gear oil in an easy-to-use package. Valvoline delivered with Extended Protection Flexfill Full Synthetic Gear Oil, providing up to 4X better gear wear protection than our conventional formulation. Unlike the industry-leading premium gear oil, Valvoline Extended Protection Flexfill Gear Oil features an innovative flexible pouch for reaching tight, hard-to-reach spaces with less waste. The high-performance formula combines superior-quality synthetic base stocks and additives for outstanding high and low temperature protection and superb thermal stability in demanding environments like towing, hauling or off-roading. So no matter where the road takes you, Valvoline Extended Protection Gear Oil is proven to maximize gear life. Our additive technology delivers extreme pressure protection, better load carrying capacity and wear resistance, plus excellent corrosion protection, while the anti-foaming agent improves lubrication for quieter, smooth-running gears. Now, Valvoline offers the best of both gear oil worlds, A premium full synthetic product in the preferred Flex fill package. No waste, no mess, no cone-shaped containers. Only from Valvoline €“ the #1 gear oil brand. Available in SAE 75W-90 and SAE 75W-140.
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Valvoline – Valvoline MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon, 773775 (Part No.773775)

Valvoline MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon, 773775

from

$39.99
Valvoline MaxLife Multi-Vehicle ATF is a full-synthetic formulation with advanced additives to prevent the major causes of transmission breakdown and help extend transmission life. Developed to help prevent leaks, maximize transmission performance, reduce transmission wear, and maintain smooth shifting longer than conventional fluids. It is suitable for use in a broad range of ATF applications including most Ford, GM, Toyota, Honda, Nissan, Hyundai, BMW, Mercedes, Volvo, VW & Audi. Volume: 1 gallon.
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Most Popular AWD Fluid for 2021 Audi A6 Quattros

Enhance your 2021 Audi A6 Quattro with this popular AWD Fluid we have in stock, for $25.99.

Valvoline – Valvoline Flex 75W140 Extended Protection Synthetic Gear Oil, Quart, 902150 (Part No.902150)

Valvoline Flex 75W140 Extended Protection Synthetic Gear Oil, Quart, 902150

from

$25.99
You asked, we listened. DIYers said they wanted a premium gear oil in an easy-to-use package. Valvoline delivered with Extended Protection Flexfill Full Synthetic Gear Oil, providing up to 4X better gear wear protection than our conventional formulation. Unlike the industry-leading premium gear oil, Valvoline Extended Protection Flexfill Gear Oil features an innovative flexible pouch for reaching tight, hard-to-reach spaces with less waste. The high-performance formula combines superior-quality synthetic base stocks and additives for outstanding high and low temperature protection and superb thermal stability in demanding environments like towing, hauling or off-roading. So no matter where the road takes you, Valvoline Extended Protection Gear Oil is proven to maximize gear life. Our additive technology delivers extreme pressure protection, better load carrying capacity and wear resistance, plus excellent corrosion protection, while the anti-foaming agent improves lubrication for quieter, smooth-running gears. Now, Valvoline offers the best of both gear oil worlds, A premium full synthetic product in the preferred Flex fill package. No waste, no mess, no cone-shaped containers. Only from Valvoline €“ the #1 gear oil brand. Available in SAE 75W-90 and SAE 75W-140.
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Best-Selling 2021 Audi A6 Quattro Brake Fluids

Upgrade your A6 Quattro with one of our 6 best-selling Brake Fluids, earning an average 4.5 stars rating across 2 reviews.

Pentosin – Pentosin Dot 4 Lv 5L, 1224204 (Part No.1224204)

Pentosin Dot 4 Lv 5L, 1224204

from

$88.99
Pentosin DOT 4 LV is a special brake fluid of highest DOT 4 performance levels and extremely low viscosity at cold temperatures. It offers safety against vapor lock; it has excellent resistance to absorbing and retaining water and provides superior corrosion resistance. Pentosin DOT 4 LV Brake Fluid is ideal for all modern vehicles with ESP and ABS. DOT 4 LV can be used in all vehicles that require DOT 4 fluid. High safety margin against vapor lock. Long-term resistance to absorbing and retaining water. Superior corrosion resistance. Low viscosity fluid provides excellent flow performance at low temperature.
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Prestone – Prestone DOT 5.1 Brake Fluid: Synthetic, High Grade, High Performance Formula For Extreme Braking, 12 oz., AS820-6 (Part No.AS820-6)

Prestone DOT 5.1 Brake Fluid: Synthetic, High Grade, High Performance Formula For Extreme Braking, 12 oz., AS820-6

from

$18.99
Prestone DOT 5.1 Motor Vehicle Brake Fluid delivers enhanced performance vs. DOT standards and is designed to handle the most extreme braking situations. Prestone DOT 5.1 is a high performance formula for extreme braking situations like racing. Formulated to protect against overheating and brake fade with a formula that exceeds DOT standards. This synthetic extended life fluid starts with higher dry boiling point vs. DOT standard protecting against performance decline due to water absorption. This formula is safe to use in all DOT 5.1 braking systems, ABS, disc or drum, and can mix with any DOT 5.1 fluid. It is recommended to only use the DOT fluid specified for your car. Using a different DOT product can affect the boiling point or replacement interval if the wrong fluid is used.
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Prestone – Prestone MAX DOT 4 Brake Fluid, Synthetic, Highest Grade, 75,000 Mile, 32 fl. oz., AS810 (Part No.AS810)

Prestone MAX DOT 4 Brake Fluid, Synthetic, Highest Grade, 75,000 Mile, 32 fl. oz., AS810

from

$17.99
Prestone MAX DOT 4 Motor Vehicle Brake Fluid is our highest grade formula, maximizing performance vs. DOT standard. Prestone MAX is our best brake fluid at protecting against overheating and brake fade. With 75,000 mile fluid life, our longest life fluid has 1.5X more miles between replacement than regular Prestone DOT 3. Prestone MAX has superior performance in severe braking conditions when compared to regular Prestone DOT 4, which means even more piece of mind about the braking system. This synthetic fluid starts with our highest dry boiling point giving our best protection against performance decline due to water absorption. Prestone MAX DOT 4 is safe to use in all DOT 4 braking systems, ABS, disc or drum, and can mix with any DOT 4 fluid. Mixing Prestone MAX with other fluids will lower the performance rating for miles and boil points, for best results replace completely with Prestone MAX DOT 4. It is recommended to only use the DOT fluid specified for your car. Using a different DOT product can affect the boiling point or replacement interval if the wrong fluid is used.
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Prestone – Prestone DOT 4 Brake Fluid: Synthetic, High Grade, Prevents Overheating & Brake Fade, 50k miles, 32 oz., AS801Y (Part No.AS801Y)

Prestone DOT 4 Brake Fluid: Synthetic, High Grade, Prevents Overheating & Brake Fade, 50k miles, 32 oz., AS801Y

from

$15.99
Prestone DOT 4 Motor Vehicle Brake Fluid delivers enhanced performance vs. DOT standards, benefitting all vehicles calling for DOT 4. This synthetic fluid starts with a higher dry boiling point than the DOT minimum standard to protect against overheating, brake fade and performance decline due to water absorption. This extended life (50,000 mile) fluid is also formulated to prevent corrosion of all metals within the braking system.  This formula is safe to use in all DOT 4 braking systems (ABS, disc or drum) and can mix with any DOT 4 fluid.  It is recommended to only use the DOT fluid specified for your car, as using a different DOT product can affect the boiling point or replacement interval if the wrong fluid is used.
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Prestone – Prestone DOT 4 Brake Fluid: Synthetic, High Grade, 50,000 Mile, 12 fl. oz., AS800Y (Part No.AS800Y)

Prestone DOT 4 Brake Fluid: Synthetic, High Grade, 50,000 Mile, 12 fl. oz., AS800Y

from

$9.99
Prestone DOT 4 Motor Vehicle Brake Fluid delivers enhanced performance vs. DOT standards, benefitting all vehicles calling for DOT 4. This synthetic fluid starts with a higher dry boiling point than the DOT minimum standard to protect against overheating, brake fade and performance decline due to water absorption. This extended life (50,000 mile) fluid is also formulated to prevent corrosion of all metals within the braking system.  This formula is safe to use in all DOT 4 braking systems (ABS, disc or drum) and can mix with any DOT 4 fluid.  It is recommended to only use the DOT fluid specified for your car, as using a different DOT product can affect the boiling point or replacement interval if the wrong fluid is used.
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Prestone – Prestone MAX DOT 4 Brake Fluid, Synthetic, Highest Grade, 75,000 Mile, 12 fl. oz., AS815 (Part No.AS815)

Prestone MAX DOT 4 Brake Fluid, Synthetic, Highest Grade, 75,000 Mile, 12 fl. oz., AS815

from

$9.99
Prestone® DOT 4 Motor Vehicle Brake Fluid delivers enhanced performance vs. DOT standards, benefitting all vehicles calling for DOT 4. This synthetic fluid starts with a higher dry boiling point than the DOT minimum standard to protect against overheating, brake fade and performance decline due to water absorption. This extended life (50,000 mile) fluid is also formulated to prevent corrosion of all metals within the braking system. This formula is safe to use in all DOT 4 braking systems (ABS, disc or drum) and can mix with any DOT 4 fluid. It is recommended to only use the DOT fluid specified for your car, as using a different DOT product can affect the boiling point or replacement interval if the wrong fluid is used.
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Top-Quality Differential Lock Actuator Fluid for 2021 Audi A6 Quattros

Choose a high-quality OEM or aftermarket Differential Lock Actuator Fluid for Audi A6 Quattros and enjoy top-notch performance from $18.99.

Valvoline – Valvoline SynPower Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart, VV982 (Part No.VV982)

Valvoline SynPower Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart, VV982

from

$18.99
Valvoline SAE 75W-140 Full Synthetic Gear Oil provides the ultimate gear protection in hypoid rear differentials and non-synchronized manual transmissions. Engineered to outperform, our formulation provides exceptional high and low temperature protection and excellent thermal stability, especially in demanding driving situations such as towing and off-roading. It contains an extreme pressure additive for better load carrying capacity and wear resistance, a limited slip additive for optimal clutch pack performance, and an anti-foaming agent for better lubrication and service life. It’s recommended for conventional rear axles and transmissions requiring EP gear lubes under high speed, high load, high torque and high horsepower conditions. Volume: 1 quart.
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Our Top Pick for a 2021 Audi A6 Quattro Power Steering Fluid

Invest in a durable Power Steering Fluid for your 2021 Audi, knowing you’re getting trusted brands and expert craftsmanship.

Valvoline – Valvoline Transmission & Differential Gear Oil: Full Synthetic 75W-90, 1 Gallon, 882505 (Part No.882505)

Valvoline Transmission & Differential Gear Oil: Full Synthetic 75W-90, 1 Gallon, 882505

from

$62.99
Valvoline SAE 75W-90 Full Synthetic Gear Oil provides the ultimate gear protection in hypoid rear differentials and non-synchronized manual transmissions. Engineered to outperform, our detergent package-based formulation contains Full Synthetic base stocks and special additives that help protect parts from rust and corrosion while providing exceptional high and low temperature protection and excellent thermal stability, especially in demanding driving situations such as towing and off-roading. It contains an extreme pressure additive for better load carrying capacity, wear resistance additives that assist in protecting gear teeth, a limited slip additive for optimal clutch pack performance, and an anti-foaming agent for better lubrication and service life. Valvoline SAE 75W-90 Full Synthetic Gear Oil is recommended for use in axle applications requiring factory-fill or drain-and-fill levels for limited slip performance. Protect your gears with Valvoline, the No. 1 gear oil brand. Volume: 1 gallon.
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Top-Rated Fluid Brands For Your 2021 Audi A6 Quattro

When it comes to finding the perfect Fluid for your 2021 Audi A6 Quattro, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 3 trusted brands. We carry the most popular Fluid brands including Valvoline and Pentosin, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $18.99. Purchasing a Fluid from us here at Advance Auto Parts is a smart move for both you and your 2021 Audi A6 Quattro, providing peace of mind with parts that meet or exceed OEM standards.

Popular Valvoline 2021 Audi A6 Quattro Fluids

If you’re looking for a top-quality Fluid for your 2021 Audi A6 Quattro, Advance Auto Parts has exactly what you need with our selection of Valvoline Fluids. We have 2 Valvoline Fluids in stock for this fitment, all known for their durability and precision fit. With prices starting at just $18.99 and an average cost of $40.99, you’ll find the perfect Fluid for your needs and budget. Valvoline Fluids for the 2021 Audi A6 Quattro come highly rated, with over 728 customer reviews and an impressive average rating of 4.8 stars. Choosing a Valvoline Fluid from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

Top-Quality Pentosin 2021 Audi A6 Quattro Fluids

For those in search of a high-quality Fluid for their 2021 Audi A6 Quattro, Advance Auto Parts offers a great selection of Pentosin Fluids. With 1 Pentosin Fluids in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Fluids start at just $88.99, giving you a range of options to suit your budget. Backed by over 2 customer ratings and an average rating of 4.8 stars, Pentosin Fluids provide both reliability and excellent performance. Choosing a Pentosin Fluid from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Pentosin Dot 4 Lv 5L, 1224204
from $88.99
(2)
Pentosin Dot 4 Lv 5L, 1224204
“As good or better than OE fluid”

FAQs for 2021 Audi A6 Quattro Fluids

What are the best-selling Fluids for 2021 Audi A6 Quattros?

What’s the price range for 2021 Audi A6 Quattro Fluids?

The prices of Fluids for the 2021 Audi A6 Quattro range from $9.99 up to $88.99 for the most premium parts.

What is the average price of a Fluid for a 2021 Audi A6 Quattro?

The average price for Fluids for the 2021 Audi A6 Quattro is $28.97. Keep in mind the variety of part types within our Fluid category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Fluids for other Audi A6 Quattro model years?

Yes, we carry Fluids for 30 model years of Audi A6 Quattros between 1995 and 2026. The following model years are the most popular for Fluid purchases: 2023, 2022, 2020, 2019, 2018, 2017, 2016, 2015, and 2014.

Does Advance Auto Parts sell Fluids for any other 2021 Audi models?

Yes. We stock Fluids for 15 other popular 2021 Audi models. Some of the most popular are 2021 S4 Fluids, 2021 A4 Quattro Fluids, 2021 TT Quattro Fluids, 2021 S6 Fluids, and 2021 A5 Quattro Fluids.

What are the top-rated Fluids that fit the 2021 Audi A6 Quattro?

Based on 2,198 reviews by customers, our 2021 Audi A6 Quattro Fluids have an average customer rating of 4.7 stars. These are the highest-rated categories of Fluids for the 2021 Audi A6 Quattro and their top-rated products:

What types of Fluids do you sell for my 2021 Audi A6 Quattro?

As of 8/2/26, these are some of the most in-demand types of Fluids for a 2021 Audi A6 Quattro:

Can I get help with 2021 Audi A6 Quattro Fluid orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Audi Fluids and more.

What is your return policy for Audi A6 Quattro Fluids?

Advance Auto Parts keeps returns simple. For new Audi A6 Quattro Fluids and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.