2004 Subaru Legacy Transmission Additives

Keep Your 2004 Subaru Legacy in Top Shape with Quality Transmission Additives

Whether you’re repairing or upgrading your Transmission Additive, using high-quality parts is key to keeping your 2004 Subaru Legacy looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Automatic (CVT) Fluids and Automatic Transmission Fluid Additives. 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 Transmission Additives from Trusted Brands

Looking for a reliable Transmission Additive? We’ve got you covered with options from brands you know and trust like Idemitsu and Mobil Oil. For example, Idemitsu Transmission Additives start at just $14.49 with an average 4.9 star rating. Mobil Oil offer similar pricing and quality, backed by strong customer feedback. With over 240 reviews and a solid 5 star average, you can shop with confidence knowing other Subaru Legacy owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2004 Subaru Legacy Transmission Additive at Advance Auto Parts is around $16.59, with a range that starts at $14.29 and goes up to $20.99. With 3 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Trans Fluid Additive start at just $20.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Transmission Additive, don’t forget to check out other key components like Coolant/Antifreeze and Fluids. At Advance Auto Parts, we’re here to help you keep your 2004 Subaru Legacy in peak condition, inside and out.

Essential 2004 Subaru Legacy Transmission Additives

ATP – Trans Fluid Additive (Part No.AT-202)

Trans Fluid Additive

from

$20.99
Product Features:
  • Reduces heat & wear
  • Eliminates TQ converter shudder & clutch pack chatter
  • For all automatic transmissions & 4×4 transfer cases
See More

Valvoline – Continuously Variable Full Synthetic CVT Fluid, 1 Gallon (Part No.876133)

Continuously Variable Full Synthetic CVT Fluid, 1 Gallon

from

$41.99
Valvoline CVT fluid is designed for today’s technologically advanced variable transmissions. It is formulated with full-synthetic, premium base oils, long-life friction modifiers, unique anti-wear additives and shear stable viscosity modifiers that help prevent oil film breakdown. Recommended for use in the following CVT applications: Audi and VW (TL 52180 G 052 180), Ford (CVT30/Mercon C), Subaru (Lineartronic CVTF), Honda (HMMF), Nissan (NS-2), Mitsubishi (CVTF-J1/SP-III), BMW Mini Cooper EZL 799), Hyundai and Kia (SP-III), Suzuki (TC/NS-2/CVT Green1), Dodge, Jeep (NS-2/CVTF+4), GM Saturn (DEX-CVT), Ford (CVT23), and Mercedes Benz (236.20).

Product Features:
  • Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of CVT transmissions
  • Enhanced anti-shudder protection for maximum power transfer
  • Developed with anti-wear technology to help improve transmission durability
  • Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
See More

Mobil 1 – Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.25201)

Full Synthetic Automatic Transmission Fluid, 1 Quart

from

$14.29
Mobil 1 Synthetic ATF is a multi-vehicle, fully synthetic automatic transmission fluid that helps to improve overall transmission durability and cleanliness. Has exceptional thermal and oxidation stability and long-term frictional properties that help to improve and extend transmission efficiency, smooth shifting performance, and fuel economy. Mobil 1 ATF provides excellent low-temperature fluidity to promote reliable lubrication at temperatures down to -51C, and exceptional shear stability to help supports viscosity retention under the most severe heavy-duty, high-temperature operating conditions. Compatibile with mineral ATF fluids and all common seal materials to help provide excelent leakage control and reduce concern in top-off emergencies. Meets or exceeds the requirements of JASO 1-A and Ford MERCON V.

Product Features:
  • Multi-vehicle, fully synthetic automatic transmission fluid that helps to improve overall transmission durability and cleanliness
  • Exceptional thermal and oxidation stability to improve and extend transmission efficiency, smooth shifting performance, and fuel economy
  • Excellent high and low-temperature fluidity to help support viscosity retention under extreme, heavy-duty operating conditions
  • Compatibile with mineral ATF fluids and all common seal materials to help provide excelent leakage control
  • Meets or exceeds the requirements of JASO 1-A and Ford MERCON V
  • Manufacturer Part Number: 112980
See More

Valvoline – CVT Continually Variable Transmission Fluid, 1 Quart (Part No.804751)

CVT Continually Variable Transmission Fluid, 1 Quart

from

$15.99
Valvoline CVT fluid is designed for today’s technologically advanced variable transmissions. It is formulated with full-synthetic, premium base oils, long-life friction modifiers, unique anti-wear additives and shear stable viscosity modifiers that help prevent oil film breakdown. Recommended for use in the following CVT applications: Audi and VW (TL 52180 G 052 180), Ford (CVT30/Mercon C), Subaru (Lineartronic CVTF), Honda (HMMF), Nissan (NS-2 and NS-3), Mitsubishi (CVTF-J1/SP-III), BMW Mini Cooper EZL 799), Hyundai and Kia (SP-III), Suzuki (TC/NS-2/CVT Green1), Dodge, Jeep (NS-2/CVTF+4), GM Saturn (DEX-CVT), Ford (CVT23), and Mercedes Benz (236.20).

Product Features:
  • Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of CVT transmissions
  • Excellent metal-to-metal protection and anti-shudder performance
  • Developed with anti-wear technology to help improve transmission durability
  • Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
See More

Idemitsu – Type TLS Automatic Transmission Fluid, 1 qt (Part No.30040093-75000C)

Type TLS Automatic Transmission Fluid, 1 qt

from

$14.49
Formulated to meet the specific requirements of Toyota, Lexus, and Scion vehicles equipped with conventional (non-CVT) transmissions that require the use of ATF T-IV. Recommended for service-fill in all Toyota, Lexus, and Scion automatic transmissions where ATF T-IV is specified. Fuel economy demands and more sophisticated electronic controls have made automatic transmissions not only more complex, but also unique to each vehicle manufacturer. Long gone are the days of having just a couple choices of automatic transmission fluid type. IDEMITSU is the factory fill Automatic Transmission Fluid (ATF) supplier to most Asian imports. IDEMITSU application-specific ATF products match the exact friction materials and performance requirements of each different vehicle model for which they are made.

Product Features:
  • Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection
  • Precisely engineered frictional characteristics guarantee smooth shifting and outstanding anti-shudder performance
  • Provides superior cleanliness, maintaining the transmission free of sludge and varnish deposits
  • Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
  • Advanced anti-wear technology provides maximum protection to gears and bearings
  • Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
See More

Most Popular Automatic (CVT) Fluids for 2004 Subaru Legacies

Enhance your 2004 Subaru Legacy with one of the 2 Automatic (CVT) Fluids we have in stock, starting at just $14.29.

Mobil 1 – Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.25201)

Full Synthetic Automatic Transmission Fluid, 1 Quart

from

$14.29
Mobil 1 Synthetic ATF is a multi-vehicle, fully synthetic automatic transmission fluid that helps to improve overall transmission durability and cleanliness. Has exceptional thermal and oxidation stability and long-term frictional properties that help to improve and extend transmission efficiency, smooth shifting performance, and fuel economy. Mobil 1 ATF provides excellent low-temperature fluidity to promote reliable lubrication at temperatures down to -51C, and exceptional shear stability to help supports viscosity retention under the most severe heavy-duty, high-temperature operating conditions. Compatibile with mineral ATF fluids and all common seal materials to help provide excelent leakage control and reduce concern in top-off emergencies. Meets or exceeds the requirements of JASO 1-A and Ford MERCON V.

Product Features:
  • Multi-vehicle, fully synthetic automatic transmission fluid that helps to improve overall transmission durability and cleanliness
  • Exceptional thermal and oxidation stability to improve and extend transmission efficiency, smooth shifting performance, and fuel economy
  • Excellent high and low-temperature fluidity to help support viscosity retention under extreme, heavy-duty operating conditions
  • Compatibile with mineral ATF fluids and all common seal materials to help provide excelent leakage control
  • Meets or exceeds the requirements of JASO 1-A and Ford MERCON V
  • Manufacturer Part Number: 112980
See More

Idemitsu – Type TLS Automatic Transmission Fluid, 1 qt (Part No.30040093-75000C)

Type TLS Automatic Transmission Fluid, 1 qt

from

$14.49
Formulated to meet the specific requirements of Toyota, Lexus, and Scion vehicles equipped with conventional (non-CVT) transmissions that require the use of ATF T-IV. Recommended for service-fill in all Toyota, Lexus, and Scion automatic transmissions where ATF T-IV is specified. Fuel economy demands and more sophisticated electronic controls have made automatic transmissions not only more complex, but also unique to each vehicle manufacturer. Long gone are the days of having just a couple choices of automatic transmission fluid type. IDEMITSU is the factory fill Automatic Transmission Fluid (ATF) supplier to most Asian imports. IDEMITSU application-specific ATF products match the exact friction materials and performance requirements of each different vehicle model for which they are made.

Product Features:
  • Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection
  • Precisely engineered frictional characteristics guarantee smooth shifting and outstanding anti-shudder performance
  • Provides superior cleanliness, maintaining the transmission free of sludge and varnish deposits
  • Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
  • Advanced anti-wear technology provides maximum protection to gears and bearings
  • Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
See More

Best-Selling 2004 Subaru Legacy Automatic Transmission Fluid Additive

Upgrade your Legacy with our best-selling Automatic Transmission Fluid Additive.

ATP – Trans Fluid Additive (Part No.AT-202)

Trans Fluid Additive

from

$20.99
Product Features:
  • Reduces heat & wear
  • Eliminates TQ converter shudder & clutch pack chatter
  • For all automatic transmissions & 4×4 transfer cases
See More

Top-Rated Transmission Additive Brands For Your 2004 Subaru Legacy

When it comes to finding the perfect Transmission Additive for your 2004 Subaru Legacy, 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 Transmission Additive brands including Idemitsu and Mobil Oil, and more, all known for their exceptional customer ratings (average brand rating of 4.9 stars) and competitive prices, as low as $14.29. Purchasing a Transmission Additive from us here at Advance Auto Parts is a smart move for both you and your 2004 Subaru Legacy, providing peace of mind with parts that meet or exceed OEM standards.

Popular Idemitsu 2004 Subaru Legacy Transmission Additives

If you’re looking for a top-quality Transmission Additive for your 2004 Subaru Legacy, Advance Auto Parts has exactly what you need with our selection of Idemitsu Transmission Additives. We have 1 Idemitsu Transmission Additives in stock for this fitment, all known for their durability and precision fit. With prices starting at just $14.49, you’ll find the perfect Transmission Additive for your needs and budget. Idemitsu Transmission Additives for the 2004 Subaru Legacy come highly rated, with over 2 customer reviews and an impressive average rating of 4.9 stars. Choosing a Idemitsu Transmission Additive from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Type TLS Automatic Transmission Fluid, 1 qt
from $14.49
(2)
Type TLS Automatic Transmission Fluid, 1 qt
“all good .”

Top-Quality Mobil Oil 2004 Subaru Legacy Transmission Additives

For those in search of a high-quality Transmission Additive for their 2004 Subaru Legacy, Advance Auto Parts offers a great selection of Mobil Oil Transmission Additives. With 1 Mobil Oil Transmission Additives in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Transmission Additives start at just $14.29, giving you a range of options to suit your budget. Backed by over 58 customer ratings and an average rating of 4.9 stars, Mobil Oil Transmission Additives provide both reliability and excellent performance. Choosing a Mobil Oil Transmission Additive from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Full Synthetic Automatic Transmission Fluid, 1 Quart
from $14.29
(58)
Full Synthetic Automatic Transmission Fluid, 1 Quart
“I changed out my Audi factory fluid at 80K miles. I know have 170 K with Mobil 1 ATF. Audi wanted to use their fluid but have had great success with M”

FAQs for 2004 Subaru Legacy Transmission Additives

What are the best-selling Transmission Additives for 2004 Subaru Legacies?

Out of 3 Transmission Additives that fit 2004 Subaru Legacies, the following parts are the top sellers:

What’s the price range for 2004 Subaru Legacy Transmission Additives?

The prices of Transmission Additives for the 2004 Subaru Legacy range from $14.29 up to $20.99 for the most premium parts.

What is the average price of a Transmission Additives Transmission Additive for a 2004 Subaru Legacy?

The average price for Transmission Additives for the 2004 Subaru Legacy is $16.59. Keep in mind the variety of part types within our Transmission Additive category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Transmission Additives for other Subaru Legacy model years?

Yes, we carry Transmission Additives for 30 model years of Subaru Legacies between 1993 and 2024. The following model years are the most popular for Transmission Additive purchases: 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, and 2011.

What are the cheapest Transmission Additives for my 2004 Subaru Legacy?

The cheapest 2004 Subaru Legacy Transmission Additives we carry are:

Does Advance Auto Parts sell Transmission Additives for any other 2004 Subaru models?

Yes. We stock Transmission Additives for 3 other popular 2004 Subaru models. Some of the most popular are 2004 Outback Transmission Additives, 2004 Impreza Transmission Additives, 2004 Forester Transmission Additives, and 2004 Baja Transmission Additives.

What are the top-rated Transmission Additives that fit the 2004 Subaru Legacy?

The one 2004 Subaru Legacy Transmission Additive we have in stock is the Full Synthetic Automatic Transmission Fluid, 1 Quart. It is rated 5 stars and costs $14.29.

What types of Transmission Additives do you sell for my 2004 Subaru Legacy?

As of 4/10/25, these are some of the most in-demand types of Transmission Additives for a 2004 Subaru Legacy:

Can I get help with 2004 Subaru Legacy Transmission Additive orders?

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

What is your return policy for Subaru Legacy Transmission Additives?

Advance Auto Parts keeps returns simple. For new Subaru Legacy Transmission Additives and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.