2008 Cadillac STS Transmission Additives

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Keep Your 2008 Cadillac STS 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 2008 Cadillac STS looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Automatic (CVT) Fluids. 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 Valvoline and Idemitsu. For example, Valvoline Transmission Additives start at just $35.99 with an average 4.8 star rating. Idemitsu offer similar pricing and quality, backed by strong customer feedback. With over 72 reviews and a solid 5 star average, you can shop with confidence knowing other Cadillac STS owners approve.

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 2008 Cadillac STS in peak condition, inside and out.

Essential 2008 Cadillac STS Transmission Additives

Valvoline – Extended Protection Automatic Transmission Fluid, 1 Quart (Part No.899179)

Extended Protection Automatic Transmission Fluid, 1 Quart

from

$14.99
Modern transmissions are better than ever, with more gears to help improve fuel efficiency and acceleration. Greater performance calls for greater protection. Valvoline Extended Protection Full Synthetic ATF features our exclusive Dual Defense Additive Technology for two layers of protection against metal-on-metal contact and thermal breakdown, all while minimizing wear on clutch components. In fact, Valvoline Extended Protection Full Synthetic ATF is 45% stronger against breakdown compared to major brand DEX/MERC oxidative PDSC performance. Proven to maximize transmission life, our patented formula is suitable for use in 92% of vehicles in light duty automatic transmissions 2010 and newer. Keep your modern vehicle shifting smoothly, mile after mile, with the ultimate protection you can only expect from Valvoline, the #1 ATF brand.

Product Features:
  • The ultimate protection for your automatic transmission
  • 45% stronger against breakdown
  • Dual Defense Additive Technology combines friction modifiers and anti-wear additives for two layers of protection
  • Suitable for use in over 92% of vehicles in light duty automatic transmissions 2010 and newer
See More

Idemitsu – Type TLS Automatic Transmission Fluid, 1 Quart (Part No.10106-042K)

Type TLS Automatic Transmission Fluid, 1 Quart

from

$11.79
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
  • Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection
  • 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
  • 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
See More

Valvoline – DEX/MERC Automatic Transmission Fluid, 1 Gallon (Part No.773636)

DEX/MERC Automatic Transmission Fluid, 1 Gallon

from

$35.99
Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON®, DEXRON®-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.

Product Features:
  • Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
  • Enhanced anti-shudder protection for smooth shifting and 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

Most Popular Automatic (CVT) Fluids for 2008 Cadillac STSs

Enhance your 2008 Cadillac STS with one of the 3 Automatic (CVT) Fluids we have in stock, starting at just $11.79.

Valvoline – DEX/MERC Automatic Transmission Fluid, 1 Gallon (Part No.773636)

DEX/MERC Automatic Transmission Fluid, 1 Gallon

from

$35.99
Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON®, DEXRON®-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.

Product Features:
  • Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
  • Enhanced anti-shudder protection for smooth shifting and 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

Idemitsu – Type TLS Automatic Transmission Fluid, 1 Quart (Part No.10106-042K)

Type TLS Automatic Transmission Fluid, 1 Quart

from

$11.79
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
  • Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection
  • 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
  • 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
See More

Valvoline – Extended Protection Automatic Transmission Fluid, 1 Quart (Part No.899179)

Extended Protection Automatic Transmission Fluid, 1 Quart

from

$14.99
Modern transmissions are better than ever, with more gears to help improve fuel efficiency and acceleration. Greater performance calls for greater protection. Valvoline Extended Protection Full Synthetic ATF features our exclusive Dual Defense Additive Technology for two layers of protection against metal-on-metal contact and thermal breakdown, all while minimizing wear on clutch components. In fact, Valvoline Extended Protection Full Synthetic ATF is 45% stronger against breakdown compared to major brand DEX/MERC oxidative PDSC performance. Proven to maximize transmission life, our patented formula is suitable for use in 92% of vehicles in light duty automatic transmissions 2010 and newer. Keep your modern vehicle shifting smoothly, mile after mile, with the ultimate protection you can only expect from Valvoline, the #1 ATF brand.

Product Features:
  • The ultimate protection for your automatic transmission
  • 45% stronger against breakdown
  • Dual Defense Additive Technology combines friction modifiers and anti-wear additives for two layers of protection
  • Suitable for use in over 92% of vehicles in light duty automatic transmissions 2010 and newer
See More

Top-Rated Transmission Additive Brands For Your 2008 Cadillac STS

When it comes to finding the perfect Transmission Additive for your 2008 Cadillac STS, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 2 trusted brands. We carry the most popular Transmission Additive brands including Idemitsu and Valvoline, and more, all known for their exceptional customer ratings (average brand rating of 4.9 stars) and competitive prices, as low as $11.79. Purchasing a Transmission Additive from us here at Advance Auto Parts is a smart move for both you and your 2008 Cadillac STS, providing peace of mind with parts that meet or exceed OEM standards.

Popular Idemitsu 2008 Cadillac STS Transmission Additives

If you’re looking for a top-quality Transmission Additive for your 2008 Cadillac STS, 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 $11.79, you’ll find the perfect Transmission Additive for your needs and budget. Idemitsu Transmission Additives for the 2008 Cadillac STS 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 Quart
from $11.79
(2)
Type TLS Automatic Transmission Fluid, 1 Quart
“Good product. Will buy again.”

Top-Quality Valvoline 2008 Cadillac STS Transmission Additives

For those in search of a high-quality Transmission Additive for their 2008 Cadillac STS, Advance Auto Parts offers a great selection of Valvoline Transmission Additives. With 1 Valvoline 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 $35.99, giving you a range of options to suit your budget. Backed by over 17 customer ratings and an average rating of 4.8 stars, Valvoline Transmission Additives provide both reliability and excellent performance. Choosing a Valvoline Transmission Additive from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
DEX/MERC Automatic Transmission Fluid, 1 Gallon
from $35.99
(17)
DEX/MERC Automatic Transmission Fluid, 1 Gallon
“Great product.”

FAQs for 2008 Cadillac STS Transmission Additives

What are the best-selling Transmission Additives for 2008 Cadillac STSs?

Out of 3 Transmission Additives that fit 2008 Cadillac STSs, the following parts are the top sellers:

What’s the price range for 2008 Cadillac STS Transmission Additives?

The prices of Transmission Additives for the 2008 Cadillac STS range from $11.79 up to $35.99 for the most premium parts.

What is the average price of a Transmission Additive for a 2008 Cadillac STS?

The average price for Transmission Additives for the 2008 Cadillac STS is $22.04. 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 Cadillac STS model years?

Yes, we carry Transmission Additives for 5 model years of Cadillac STSs between 2005 and 2011. The following model years are the most popular for Transmission Additive purchases: 2006, 2005, 2011, 2007, 2010, and 2009.

What are the cheapest Transmission Additives for my 2008 Cadillac STS?

The cheapest 2008 Cadillac STS Transmission Additives we carry are:

Does Advance Auto Parts sell Transmission Additives for any other 2008 Cadillac models?

Yes. We stock Transmission Additives for 6 other popular 2008 Cadillac models. Some of the most popular are 2008 XLR Transmission Additives, 2008 CTS Transmission Additives, 2008 DTS Transmission Additives, 2008 Escalade Transmission Additives, and 2008 Escalade ESV Transmission Additives.

What are the top-rated Transmission Additives that fit the 2008 Cadillac STS?

The one 2008 Cadillac STS Transmission Additive we have in stock is the Type TLS Automatic Transmission Fluid, 1 Quart. It is rated 4.5 stars and costs $11.79.

What types of Transmission Additives do you sell for my 2008 Cadillac STS?

We currently have just 1 Transmission Additive in stock for a 2008 Cadillac STS, and as of 3/1/26, it is an Automatic (CVT) Fluid.

Can I get help with 2008 Cadillac STS Transmission Additive orders?

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

What is your return policy for Cadillac STS Transmission Additives?

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