1999 Audi A6 Quattro Engine Oils

Enhance and Protect Your 1999 Audi A6 Quattro with Quality Engine Oils

Maintaining the performance of your 1999 Audi A6 Quattro starts with choosing the right parts, and a high-quality Engine Oil helps ensure a reliable and efficient vehicle. At Advance Auto Parts, we offer Engine Oils specifically for the 1999 Audi A6 Quattro, ensuring a perfect fit and lasting durability. Choosing to shop with Advance Auto Parts means you’re making a smart decision to prioritize both quality and reliability for your vehicle.

Affordable and Reliable Engine Oils for Every Budget

Finding an Engine Oil that combines quality with affordability is easy at Advance Auto Parts. With prices starting as low as $5.89 and an average price of $21.40, you can choose one that fits your budget while delivering the quality you expect. Our Engine Oils are competitively priced, ranging from $5.89 to $114.99, so you get value without compromising on strength or reliability.

Trusted Brands and Top-Rated Options

With 62 Engine Oils from 4 trusted brands in stock, Advance Auto Parts has you covered. Our Engine Oils for the 1999 Audi A6 Quattro have earned reviews from over 9096 customers, with an average 5 stars rating across the board. Popular options include EDGE High Mileage 5W-30 Advanced Full Synthetic Engine Oil, 5 Qts, 5W-30 Full Synthetic Motor Oil: 5 Quarts, and GTX High Mileage 5W-30 Synthetic Blend Engine Oil, 5 Quarts, starting at $27.99. Our selection includes highly regarded brands such as Castrol, Fram, and Pentosin, and more, offering you top-notch reliability. For example, we have 30 Castrol Engine Oils starting at $9.99 with an average rating of 5 stars, 23 Fram options from $6.49 with a 4 stars rating, and 5 Pentosin Engine Oils priced from $21.99 with a 5 stars average rating.

Engine Oils for Your 1999 Audi A6 Quattro

Castrol – EDGE High Mileage 5W-30 Advanced Full Synthetic Engine Oil, 5 Qt (Part No.15906E)

EDGE High Mileage 5W-30 Advanced Full Synthetic Engine Oil, 5 Qt

from

$38.99
Castrol EDGE High Mileage 5W-30 is an advanced full synthetic motor oil that is specifically designed for vehicles with over 75,000 miles. It’s been engineered to reduce leaks, burnoff and power robbing deposits, but also contains a proprietary additive to protect the emission system. Our Phosphorus Replacement Technology reduces harmful phosphorus to protect the catalytic converter and extend maximum performance. It is the natural choice for drivers who demand maximum performance from their high mileage car.

Product Features:
  • Phosphorus Replacement Technology to help extend the life of the emission system
  • Reduces leaks, oil burnoff and power robbing deposits
  • 15,000 miles between oil changes (1)
  • (1) Or one year, whichever comes first
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SN/SM
  • ILSAC GF-6
  • Porsche A40
  • Meets engine test requirements of Chrysler MS 6395
  • Meets Ford WSS-M2C961-A1
See More

Castrol – GTX High Mileage 5W-30 Synthetic Blend Engine Oil, 5 Quart (Part No.15980E)

GTX High Mileage 5W-30 Synthetic Blend Engine Oil, 5 Quart

from

$30.99
Castrol GTX High Mileage 5W-30 is the No. 1 consumer high-mileage brand of motor oil. It’s a synthetic blend engine oil that helps extend the life of engines by protecting against sludge, wear and burn-off. Engineered with Phosphorous Replacement Technology, it also protects emission systems by replacing some of the phosphorous that can damage catalytic converters.

Product Features:
  • Phosphorus Replacement Technology helps extend emission system life
  • Superior dispersancy that fights sludge build up
  • Exceptional oil burn-off protection exceeding industry standards (1)
  • Seal conditioners to help reduce leaks
  • Advanced additives that minimize engine wear
  • Improved fuel economy (2)
  • (1) Based on API and ACEA volatility specifications
  • MB-Approval 229.5
  • (2) In 5W-20, 5W-30 and 10W-30 grades versus industry specifications
  • API SP/SN PLUS/SN/SM
  • ILSAC GF-6
  • Meets Ford WSS-M2C946-B1
  • Meets Ford WSS-M2C961-A1
See More

Castrol – EDGE Euro 5W-40 A3/B4 Advanced Full Synthetic Motor Oil, 5 Quarts (Part No.15B6FE)

EDGE Euro 5W-40 A3/B4 Advanced Full Synthetic Motor Oil, 5 Quarts

from

$37.99
Castrol EDGE Euro 5W-40 A3/B4 is an advanced full synthetic motor oil engineered to exceed manufacturer test limits ensuring the highest level of protection and maximum performance for European cars. European car manufacturers create unique motor oil specifications to ensure the lubricant can withstand the intense pressure, heat and friction generated in a high output engine. To ensure compliance, rigorous engine tests are developed, with approval granted only when the oil achieves the minimum values required in each test. Castrol EDGE Euro Car fluids are formulated to exceed these requirements and deliver maximum protection and performance.

Product Features:
  • 1.2X Better viscosity control to help engines run better for longer (1)
  • 2X Better engine cleanliness to help maximize engine performance (1)
  • (1) As measured in DV6 test vs. test limit
  • Approved and licensed specifications:
  • ACEA A3/B4
  • API SP
  • BMW Longlife-01
  • ILSAC GF-6
  • MB-Approval MB 229.5
  • Renault RN0700 / RN0710
  • VW 502 00 / 505 00
  • Meets engine test requirements of Chrysler MS 12991
See More

Castrol – EDGE 5W-30 Advanced Full Synthetic Engine Oil, 5 Quart (Part No.1598B1)

EDGE 5W-30 Advanced Full Synthetic Engine Oil, 5 Quart

from

$37.99
Castrol EDGE 5W-30 is an advanced full synthetic motor oil and the optimal choice for drivers who want the best combination of wear protection, viscosity control and thermal stability to maximize engine performance. It is one of Castrols strongest engine oils with the strength to maintain this unsurpassed level of engine protection for up to 20,000 miles between oil changes or one year.

Product Features:
  • 3X Stronger than the leading full synthetic (1)
  • 10X Better high stress performance (2)
  • 20,000 miles between oil changes (3)
  • (1) Viscosity breakdown as measured in Kurt Orbahn test on 5W-30 grade
  • (2) As measured in Seq IX test under high load/torque conditions vs. API SP test limits
  • (3) Or one year, whichever comes first
  • Approved and Licensed Specifications:
  • ILSAC GF-6
  • Exceeds API SP/SN PLUS/SN/SM
  • GM dexos1 Gen 3
  • Meets engine test requirements of Chrysler MS 6395
  • Meets Ford WSS-M2C946-B1
  • Meets Ford WSS-M2C961-A1
See More

Castrol – GTX 10W-30 High Mileage Synthetic Blend Motor Oil, 5 Quart (Part No.1597B0)

GTX 10W-30 High Mileage Synthetic Blend Motor Oil, 5 Quart

from

$30.99
Castrol GTX High Mileage 10W-30 is the No. 1 consumer high-mileage brand of motor oil. It’s a synthetic blend engine oil that helps extend the life of engines by protecting against sludge, wear and burn-off. Engineered with Phosphorous Replacement Technology, it also protects emission systems by replacing some of the phosphorous that can damage catalytic converters.

Product Features:
  • Phosphorus Replacement Technology helps extend emission system life
  • Superior dispersancy that fights sludge build up
  • Exceptional oil burn-off protection exceeding industry standards (1)
  • Seal conditioners to help reduce leaks
  • Advanced additives that minimize engine wear
  • Improved fuel economy (2)
  • (1) Based on API and ACEA volatility specifications
  • ILSAC GF-6
  • (2) In 5W-20, 5W-30 and 10W-30 grades versus industry specifications
  • API SP/SN PLUS/SN/SM
  • ILSAC GF-6
See More

Castrol – EDGE 5W-30 Advanced Full Synthetic Motor Oil, 1 Quart (Part No.152C3C)

EDGE 5W-30 Advanced Full Synthetic Motor Oil, 1 Quart

from

$11.99
Castrol EDGE 5W-30 is an advanced full synthetic motor oil and the optimal choice for drivers who want the best combination of wear protection, viscosity control and thermal stability to maximize engine performance. It is one of Castrols strongest engine oils with the strength to maintain this unsurpassed level of engine protection for up to 20,000 miles between oil changes or one year.

Product Features:
  • 3X Stronger than the leading full synthetic (1)
  • 10X Better high stress performance (2)
  • 20,000 miles between oil changes (3)
  • (1) Viscosity breakdown as measured in Kurt Orbahn test on 5W-30 grade
  • (2) As measured in Seq IX test under high load/torque conditions vs. API SP test limits
  • (3) Or one year, whichever comes first
  • Approved and Licensed Specifications:
  • ACEA A5/B5, C2
  • Exceeds API SP/SN PLUS/SN/SM
  • GM dexos1 Gen 3
  • Meets engine test requirements of Chrysler MS 6395
  • Meets Ford WSS-M2C946-B1
  • Meets Ford WSS-M2C961-A1
See More

Castrol – EDGE Euro 5W-40 A3/B4 Advanced Full Synthetic Motor Oil, 1 Quart (Part No.152C7E)

EDGE Euro 5W-40 A3/B4 Advanced Full Synthetic Motor Oil, 1 Quart

from

$12.49
Castrol EDGE Euro 5W-40 A3/B4 is an advanced full synthetic motor oil engineered to exceed manufacturer test limits ensuring the highest level of protection and maximum performance for European cars. European car manufacturers create unique motor oil specifications to ensure the lubricant can withstand the intense pressure, heat and friction generated in a high output engine. To ensure compliance, rigorous engine tests are developed, with approval granted only when the oil achieves the minimum values required in each test. Castrol EDGE Euro Car fluids are formulated to exceed these requirements and deliver maximum protection and performance.

Product Features:
  • 1.2X Better viscosity control to help engines run better for longer (1)
  • 2X Better engine cleanliness to help maximize engine performance (1)
  • (1) As measured in DV6 test vs. test limit
  • Approved and licensed specifications:
  • ACEA A3/B4
  • API SP
  • BMW Longlife-01
  • MB-Approval MB 229.5
  • Renault RN0700 / RN0710
  • VW 502 00 / 505 00
  • Meets engine test requirements of Chrysler MS 12991
See More

Castrol – EDGE High Mileage 5W-30 Advanced Full Synthetic Motor Oil, 1 Quart (Part No.15979F)

EDGE High Mileage 5W-30 Advanced Full Synthetic Motor Oil, 1 Quart

from

$12.99
Castrol EDGE High Mileage 5W-30 is an advanced full synthetic motor oil that is specifically designed for vehicles with over 75,000 miles. It’s been engineered to reduce leaks, burnoff and power robbing deposits, but also contains a proprietary additive to protect the emission system. Our Phosphorus Replacement Technology reduces harmful phosphorus to protect the catalytic converter and extend maximum performance. It is the natural choice for drivers who demand maximum performance from their high mileage car.

Product Features:
  • Phosphorus Replacement Technology to help extend the life of the emission system
  • Reduces leaks, oil burnoff and power robbing deposits
  • 15,000 miles between oil changes (1)
  • (1) Or one year, whichever comes first
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SN/SM
  • ILSAC GF-6
  • Meets Ford WSS-M2C960-A1
  • Meets engine test requirements of Chrysler MS 6395
  • Meets Ford WSS-M2C946-B1
  • Meets Ford WSS-M2C961-A1
See More

Castrol – GTX 5W-30 Synthetic Blend Motor Oil, 5 Quart (Part No.15A66D)

GTX  5W-30 Synthetic Blend Motor Oil, 5 Quart

from

$29.99
Castrol GTX 5W-30 is a synthetic blend motor oil with a double-action formula proven to clean away the sludge that can block engine oilways (1) and help prevent new sludge formation. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine’s vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life. (1) When tested in engines with a high level of sludge.

Product Features:
  • Premium-quality base oils and anti-wear additives that help extend engine life
  • Superior protection against engine sludge
  • Advanced protection against viscosity and thermal breakdown
  • Superior protection against high-temperature deposits
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SN/SM
  • ILSAC GF-6
  • ILSAC GF-6
  • Meets Ford WSS-M2C946-B1
See More

Castrol – GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 1 Quart (Part No.149D6A)

GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 1 Quart

from

$10.49
Castrol GTX High Mileage 5W-30 is the #1 consumer high-mileage brand of motor oil. It’s a synthetic blend engine oil that helps extend the life of engines by protecting against sludge, wear and burn-off. Engineered with Phosphorous Replacement Technology, it also protects emission systems by replacing some of the phosphorous that can damage catalytic converters.

Product Features:
  • Phosphorus Replacement Technology helps extend emission system life
  • Superior dispersancy that fights sludge build up
  • Exceptional oil burn-off protection exceeding industry standards (1)
  • Seal conditioners to help reduce leaks
  • Advanced additives that minimize engine wear
  • Improved fuel economy (2)
  • (1)Based on API and ACEA volatility specifications
  • Approved for BMW M-Models
  • (2) In 5W-20, 5W-30 and 10W-30 grades versus industry specifications
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SN/SM
  • ILSAC GF-6
  • Meets Ford WSS-M2C946-B1
  • Meets Ford WSS-M2C961-A1
See More

Castrol – GTX 10W-30 Conventional Motor Oil, 5 Quarts (Part No.15B7AA)

GTX 10W-30 Conventional Motor Oil, 5 Quarts

from

$29.99
Castrol GTX 10W-30 is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine’s vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life.

Product Features:
  • Advanced protection against viscosity and thermal breakdown
  • Superior protection against engine sludge
  • Premium quality base oils and anti-wear additives to help extend the life of your engine
  • Helps minimize oil consumption
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SN/SM
  • ILSAC GF-6
  • Meets Ford WSS-M2C961-A1
See More

Castrol – EDGE Euro 5W-30 A3/B4 Advanced Full Synthetic Motor Oil, 1 Quart (Part No.15484E)

EDGE Euro 5W-30 A3/B4 Advanced Full Synthetic Motor Oil, 1 Quart

from

$12.49
Castrol EDGE Euro 5W-30 A3/B4 is an advanced full synthetic motor oil engineered to exceed manufacturer test limits ensuring the highest level of protection and maximum performance for European cars. European car manufacturers create unique motor oil specifications to ensure the lubricant can withstand the intense pressure, heat and friction generated in a high output engine. To ensure compliance, rigorous engine tests are developed, with approval granted only when the oil achieves the minimum values required in each test. Castrol EDGE Euro Car fluids are formulated to exceed these requirements and deliver maximum protection and performance.

Product Features:
  • 1.2X Better viscosity control to help engines run better for longer (1)
  • 2X Better engine cleanliness to help maximize engine performance (2)
  • (1) As measured in DV6 test vs. test limit
  • (2) As measured in OM646LA test vs. test limit
  • Approved and licensed specifications:
  • ACEA A3/B4
  • API SL
  • Meets Ford WSS-M2C946-B1
  • BMW Longlife-01
  • MB-Approval 229.5
  • VW 502 00 / 505 00
See More

Castrol – EDGE 5W-50 Advanced Full Synthetic Motor Oil, 1 Quart (Part No.152C6F)

EDGE 5W-50 Advanced Full Synthetic Motor Oil, 1 Quart

from

$11.99
Castrol EDGE 5W-50 is an advanced full synthetic motor oil and the optimal choice for drivers who want the best combination of wear protection, viscosity control and thermal stability to maximize engine performance. It is one of Castrols strongest engine oils with the strength to maintain this unsurpassed level of engine protection for up to 20,000 miles between oil changes or one year.

Product Features:
  • 3X Stronger than the leading full synthetic (1)
  • 10X Better high stress performance (2)
  • 20,000 miles between oil changes (3)
  • (1) Viscosity breakdown as measured in Kurt Orbahn test on 5W-30 grade
  • (2) As measured in Seq IX test under high load/torque conditions vs. API SP test limits
  • (3) Or one year, whichever comes first
  • Approved and Licensed Specifications:
  • Meets Ford WSS-M2C945-B1
  • Exceeds API SP/SN PLUS/SN/SM
See More

Castrol – EDGE Euro Car 5W-30 C3 Full Synthetic Motor Oil, 1 Quart (Part No.154BC4)

EDGE Euro Car 5W-30 C3 Full Synthetic Motor Oil, 1 Quart

from

$12.49
CASTROL EDGE Euro Car 5W-30 C3 Full Synthetic Motor Oil is a high-performance engine oil that is designed to provide superior protection to the latest technology, high output engines that operate at extreme temperatures. This full-synthetic motor oil is formulated to transform under pressure, increasing film strength to prevent oil breakdown and reduce friction to unlock maximum performance. It is optimized to deliver 40% better performance than other motor oils and is recommended by world-leading auto manufacturers. This motor oil provides engine protection for the entire drain interval and meets API CF/SN, ACEA A3/B4, ACEA C3, GM dexos2 specifications. It is suitable for European OEM diesel specifications for Mercedes-Benz and VW/Audi. This motor oil was formerly known as Castrol SLX and is available in a 1 quart container.

Product Features:
  • Optimized to deliver 40% better performance than required by acea standards.
  • Recommended by world leading auto manufacturers
  • Engine protection for the entire drain interval even under extreme pressure of high output engines
  • Meets api cf/sn, acea a3/b4, acea c3, gm dexos2, mb approval 229.31/229.51, vw 505 00/505 01, renault rn 0700/0710
  • Formerly known as castrol slx
  • Syntec Power Technology: The reformulated EDGE Engine Oil now features Syntec Power Technology, which enhances its performance even further.
See More

Castrol – GTX 5W-20 Synthetic Blend Motor Oil, 5 Quarts (Part No.15A66C)

GTX 5W-20 Synthetic Blend Motor Oil, 5 Quarts

from

$9.99
Castrol GTX 5W-20 is a synthetic blend motor oil with a double-action formula proven to clean away the sludge that can block engine oilways (1) and help prevent new sludge formation. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine’s vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life. (1) When tested in engines with a high level of sludge

Product Features:
  • Premium-quality base oils and anti-wear additives that help extend engine life
  • Superior protection against engine sludge
  • Advanced protection against viscosity and thermal breakdown
  • Superior protection against high-temperature deposits
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SN/SM
  • ILSAC GF-6
  • Meets or exceeds the following specifications:
  • Meets Ford WSS-M2C945-B1
  • Meets Ford WSS-M2C960-A1
See More

Castrol – GTX 10W-30 Conventional Motor Oil, 1 Quart (Part No.15B400)

GTX 10W-30 Conventional Motor Oil, 1 Quart

from

$9.99
Castrol GTX 10W-30 is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine’s vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life.

Product Features:
  • Advanced protection against viscosity and thermal breakdown
  • Superior protection against engine sludge
  • Premium quality base oils and anti-wear additives to help extend the life of your engine
  • Helps minimize oil consumption
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SN/SM
  • ILSAC GF-6
  • Meets Ford WSS-M2C960-A1
See More

Castrol – GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 1 Quart (Part No.149D6C)

GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 1 Quart

from

$10.49
Castrol GTX High Mileage 10W-30 is the No. 1 consumer high-mileage brand of motor oil. It’s a synthetic blend engine oil that helps extend the life of engines by protecting against sludge, wear and burn-off. Engineered with Phosphorous Replacement Technology, it also protects emission systems by replacing some of the phosphorous that can damage catalytic converters.

Product Features:
  • Phosphorus Replacement Technology to help extend the life of the emission system
  • Superior dispersancy that fights sludge build up
  • Exceptional oil burn-off protection exceeding industry standards (1)
  • Seal conditioners to help reduce leaks
  • Advanced additives that minimize engine wear
  • Improved fuel economy (2)
  • (1) Based on API and ACEA volatility specifications
  • Meets or exceeds the following specifications:
  • (2) In 5W-20, 5W-30 and 10W-30 grades versus industry specifications
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SM
  • ILSAC GF-6
See More

Castrol – EDGE 10W-30 Advanced Full Synthetic Motor Oil, 5 Quarts (Part No.1598B6)

EDGE 10W-30 Advanced Full Synthetic Motor Oil, 5 Quarts

from

$37.99
Castrol EDGE 10W-30 is an advanced full synthetic motor oil and the optimal choice for drivers who want the best combination of wear protection, viscosity control and thermal stability to maximize engine performance. It is one of Castrols strongest engine oils with the strength to maintain this unsurpassed level of engine protection for up to 20,000 miles between oil changes or one year.

Product Features:
  • 3X Stronger than the leading full synthetic (1)
  • 10X Better high stress performance (2)
  • 20,000 miles between oil changes (3)
  • (1) Viscosity breakdown as measured in Kurt Orbahn test on 5W-30 grade
  • (2) As measured in Seq IX test under high load/torque conditions vs. API SP test limits
  • (3) Or one year, whichever comes first
  • Approved and Licensed Specifications:
  • Exceeds API SP/SN PLUS/SN/SM
See More

Castrol – GTX 20W-50 Conventional Motor Oil, 5 Quarts (Part No.15984B)

GTX 20W-50 Conventional Motor Oil, 5 Quarts

from

$29.99
Castrol GTX 20W-50 is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine’s vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life.

Product Features:
  • Advanced protection against viscosity and thermal breakdown
  • Superior protection against engine sludge
  • Premium quality base oils and anti-wear additives to help extend the life of your engine
  • Helps minimize oil consumption
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SN/SM
See More

Castrol – EDGE 10W-30 Advanced Full Synthetic Motor Oil, 1 Quart (Part No.152E4E)

EDGE 10W-30 Advanced Full Synthetic Motor Oil, 1 Quart

from

$11.99
Castrol EDGE 10W-30 is an advanced full synthetic motor oil and the optimal choice for drivers who want the best combination of wear protection, viscosity control and thermal stability to maximize engine performance. It is one of Castrols strongest engine oils with the strength to maintain this unsurpassed level of engine protection for up to 20,000 miles between oil changes or one year.

Product Features:
  • 3X Stronger than the leading full synthetic (1)
  • 10X Better high stress performance (2)
  • 20,000 miles between oil changes (3)
  • (1) Viscosity breakdown as measured in Kurt Orbahn test on 5W-30 grade
  • (2) As measured in Seq IX test under high load/torque conditions vs. API SP test limits
  • (3) Or one year, whichever comes first
  • Approved and Licensed Specifications:
  • Exceeds API SP/SN PLUS/SN/SM
  • ILSAC GF-6
See More

Pentosin – HP 5W-30 Synthetic Engine Oil meets service class API SL,CL (Part No.8043206)

HP 5W-30 Synthetic Engine Oil meets service class API SL,CL

from

$79.99
Pentosin HP 5W-30 Synthetic Motor Oil is a high-performance engine oil that is fully synthetic and designed for modern vehicles with extended oil service intervals. It is suitable for use in both gasoline and diesel engines, including those with turbochargers, as well as non-turbocharged vehicles that require 5W-30 oil. This all-season motor oil offers excellent protection against motor oil sludge and fuel deposits, and it contains special friction modifiers that help to reduce engine wear. Pentosin HP 5W-30 Synthetic Motor Oil is formulated for long service life intervals, making it an ideal choice for drivers who want to keep their engines running smoothly and efficiently. It meets service class API SL,CL.

Product Features:
  • An all- season engine oil offering great protection against harsh start-up conditions and extreme temperature changes.
  • Formulated for long service life intervals.
  • Reduces engine oil sludge and fuel deposits.
  • Contains special friction modifiers which help the engine run smoothly and improve fuel economy.
  • Fully Synthetic Formula: Pento High Performance Engine Oil is made with a full synthetic formula, providing superior protection and performance for your engine.
  • Meets API SL/CL Specs: This engine oil meets the latest API SL/CL specifications, ensuring that it meets the highest standards for engine protection and performance.
See More

Castrol – GTX 20W-50 Conventional Motor Oil, 1 Quart (Part No.151A8E)

GTX 20W-50 Conventional Motor Oil, 1 Quart

from

$9.99
Castrol GTX 20W-50 is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine’s vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life.

Product Features:
  • Advanced protection against viscosity and thermal breakdown
  • Superior protection against engine sludge
  • Premium quality base oils and anti-wear additives to help extend the life of your engine
  • Helps minimize oil consumption
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SN/SM
See More

Castrol – GTX 10W-40 Conventional Motor Oil, 1 Quart (Part No.14CD5A)

GTX 10W-40 Conventional Motor Oil, 1 Quart

from

$9.99
Castrol GTX 10W-40 is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine’s vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life.

Product Features:
  • Advanced protection against viscosity and thermal breakdown
  • Superior protection against engine sludge
  • Premium quality base oils and anti-wear additives to help extend the life of your engine
  • Helps minimize oil consumption
  • (1) When tested in engines with a high level of sludge
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SN/SM
See More

Castrol – EDGE High Mileage 10W-30 Advanced Full Synthetic Motor Oil, 1 Quart (Part No.15979B)

EDGE High Mileage 10W-30 Advanced Full Synthetic Motor Oil, 1 Quart

from

$12.99
Castrol EDGE High Mileage 10W-30 is an advanced full synthetic motor oil that is specifically designed for vehicles with over 75,000 miles. It’s been engineered to reduce leaks, burnoff and power robbing deposits, but also contains a proprietary additive to protect the emission system. Our Phosphorus Replacement Technology reduces harmful phosphorus to protect the catalytic converter and extend maximum performance. It is the natural choice for drivers who demand maximum performance from their high mileage car.

Product Features:
  • Phosphorus Replacement Technology to help extend the life of the emission system
  • Reduces leaks, oil burnoff and power robbing deposits
  • 15,000 miles between oil changes (1)
  • (1) Or one year, whichever comes first
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SN/SM
  • ILSAC GF-6
See More

Castrol – EDGE High Mileage 10W-40 Advanced Full Synthetic Motor Oil, 1 Quart (Part No.15989F)

EDGE High Mileage 10W-40 Advanced Full Synthetic Motor Oil, 1 Quart

from

$12.99
Castrol EDGE High Mileage 10W-40 is an advanced full synthetic motor oil that is specifically designed for vehicles with over 75,000 miles. It’s been engineered to reduce leaks, burnoff and power robbing deposits, but also contains a proprietary additive to protect the emission system. Our Phosphorus Replacement Technology reduces harmful phosphorus to protect the catalytic converter and extend maximum performance. It is the natural choice for drivers who demand maximum performance from their high mileage car.

Product Features:
  • Phosphorus Replacement Technology to help extend the life of the emission system
  • Reduces leaks, oil burnoff and power robbing deposits
  • 15,000 miles between oil changes (1)
  • (1) Or one year, whichever comes first
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SN/SM
See More

Pentosin – Super Performance III 5W-30 Full Synthetic Motor Oil, Exceeds API SM,CF; ACEA A3,B3,B4,C3, 1 Liter (Part No.8078106)

Super Performance III 5W-30 Full Synthetic Motor Oil, Exceeds API SM,CF; ACEA A3,B3,B4,C3, 1 Liter

from

$21.99
5W-30 Pento Super Performance III is a newly formulated high performance engine oil designed to be used in vehicles that call for extended oil drain intervals. This oil is blended by using some of the most modern additives available and carefully selected synthetic based oils. By doing this the oil is considered a Low SAPS formulation that preserves catalysts, the environment, and maintains outstanding engine performance.

Product Features:
  • An all- season motor oil offering great protection against harsh start-up conditions and extreme temperature changes.
  • Formulated for long service life intervals.
  • Reduces motor oil sludge and fuel deposits.
  • Contains special friction modifiers which help the engine run smoothly and improve fuel economy.
  • High Performance Formula: The 5W-30 Pento Super Performance III is a newly formulated high performance engine oil designed for vehicles with extended oil drain intervals.
  • Advanced Additives: Blended using some of the most modern additives available, ensuring superior engine protection and performance.
  • Full Synthetic Composition: Made with carefully selected synthetic-based oils, providing excellent lubrication and stability.
  • Low SAPS Formulation: This oil is a Low SAPS (Sulfated Ash, Phosphorus, and Sulfur) formulation, which helps preserve catalytic converters and is environmentally friendly.
  • Exceeds Industry Standards: SP III 5W-30 Synthetic Motor Oil exceeds API SM, CF; ACEA A3, B3, B4, C3 standards, ensuring top-notch quality and reliability.
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Pentosin – HP II 5W-40 Synthetic Engine Oil exceeds service class API SM ACEA A3,B4 (Part No.8042107)

HP II 5W-40 Synthetic Engine Oil exceeds service class API SM ACEA A3,B4

from

$28.49
Pentosin HP II 5W-40 Synthetic Motor Oil is a high-performance engine oil that is designed to provide excellent protection for your vehicle all year round. This fully synthetic oil is formulated to offer longer changing intervals, reduce motor oil sludge and fuel deposits, and preserve the catalyst and the environment. It contains special friction modifiers that help to improve fuel efficiency and maintain outstanding engine performance. Pentosin HP II 5W-40 Synthetic Motor Oil exceeds service class API SM ACEA A3,B4, making it an ideal choice for drivers who demand the best from their vehicles. Whether you’re driving in extreme temperatures or under heavy loads, Pentosin HP II 5W-40 Synthetic Motor Oil will help keep your engine running smoothly and efficiently.

Product Features:
  • An all- season engine oil offering great protection against harsh start-up conditions and extreme temperature changes.
  • Formulated for long service life intervals.
  • Reduces engine oil sludge and fuel deposits.
  • Contains special friction modifiers which help the engine run smoothly and improve fuel economy.
  • Fully Synthetic Oil Composition: PENTO HP II 5W-40 1L is made up of fully synthetic oil composition, which provides superior protection to the engine and ensures longer engine life.
  • Longer Changing Intervals: The newly formulated PENTO HP II 5W-40 1L allows for longer changing intervals, which means less frequent oil changes and reduced maintenance costs.
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Castrol – GTX 10W-40 Conventional Motor Oil, 5 Quarts (Part No.15982E)

GTX 10W-40 Conventional Motor Oil, 5 Quarts

from

$31.99
Castrol GTX 10W-40 is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine’s vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life.

Product Features:
  • Advanced protection against viscosity and thermal breakdown
  • Superior protection against engine sludge
  • Premium quality base oils and anti-wear additives to help extend the life of your engine
  • Helps minimize oil consumption
  • (1) When tested in engines with a high level of sludge
  • Meets or exceeds the following specifications:
  • API SP/SN PLUS/SN/SM
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FAQs for 1999 Audi A6 Quattro Engine Oils

Which Engine Oils are the top sellers for the 1999 Audi A6 Quattro?

Out of 62 Engine Oils that fit 1999 Audi A6 Quattros, the following parts are the top sellers:
5W-30 Full Synthetic Motor Oil: 5 Quart
from $27.99
This product is not rated
5W-30 Full Synthetic Motor Oil: 5 Quart
Engine Oil

How can I make sure that a part will be compatible with my 1999 Audi A6 Quattro?

Our Audi A6 Quattro aftermarket and OEM parts are designed specifically for the 1999 model. You can always find your specific fitment and compatibility for your 1999 Audi on an individual product page.

What is the price range for 1999 Audi A6 Quattro Engine Oils?

The range of prices of Engine Oils for the 1999 Audi A6 Quattro goes from $5.89 up to $114.99 for the most premium parts.

What is the average price of 1999 Audi A6 Quattro Engine Oils?

1999 Audi A6 Quattro Engine Oils average $21.40 for our selection of OEM and aftermarket parts. Keep in mind the variety of brands we offer, such as Castrol, Fram, Pentosin, and more, so you are likely to find a wide range of prices across a variety of brands and products.

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

Yes, we currently stock Engine Oils for 29 model years of Audi A6 Quattros, from 1995 to 2024. Model years 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, and 2015 are the most popular for Engine Oils purchases.

Which Engine Oils are highest rated for the 1999 Audi A6 Quattro?

Based on 9,096 customer reviews, our 1999 Audi A6 Quattro Engine Oils have an average rating of 5. Explore our top-rated Engine Oils here:
EDGE 5W-30 Advanced Full Synthetic Motor Oil, 1 Quart
from $11.99
(442)
EDGE 5W-30 Advanced Full Synthetic Motor Oil, 1 Quart
“The best oil for my car.”
GTX  5W-30 Synthetic Blend Motor Oil, 5 Quart
from $29.99
(333)
GTX 5W-30 Synthetic Blend Motor Oil, 5 Quart
“Great sale package with filter.”
GTX 5W-20 Synthetic Blend Motor Oil, 5 Quarts
from $9.99
(333)
GTX 5W-20 Synthetic Blend Motor Oil, 5 Quarts
“Good price and good product”

Can I get help with 1999 Audi A6 Quattro Engine Oils orders?

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

What is your return policy for Audi A6 Quattro Engine Oils?

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