2018 Mack GU5 Fluids

Keep Your 2018 Mack GU5 in Top Shape with Quality Fluids

When it comes to maintaining or upgrading your 2018 Mack GU5, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Fluid for your GU5, which is why we carry a wide range of OEM and aftermarket Fluids that are built to last, including Diesel Emissions Fluids, and more. Whether you’re replacing a damaged Fluid or looking to upgrade, our selection of Fluids for the 2018 Mack GU5 ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.

Competitive Prices and Extensive Inventory

On average, a Fluid for a 2018 Mack GU5 at Advance Auto Parts costs $19.99, with prices ranging from as low as $9.99 to $29.99. We stock 3 Fluids from 3 trusted brands, so you can be confident you’re getting the best options available. Some of our most popular choices for Fluids include Blue DEF Diesel Exhaust Fluid, 2.5 Gallon, Diesel Exhaust Fluid (DEF): 2.5 Gallon, and PLATINUM Diesel Exhaust Fluid, 2.5 Gallon, all starting at just $9.99. These Fluids are designed to fit your GU5 perfectly, offering both functionality and style.

Explore Related Parts

And while you’re here, don’t forget to check out related part categories like Coolant/Antifreeze to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 2018 Mack GU5 running smoothly and looking great.

Essential 2018 Mack GU5 Fluids

BlueDEF – PLATINUM Diesel Exhaust Fluid, 2.5 Gallon (Part No.DEG002)

PLATINUM Diesel Exhaust Fluid, 2.5 Gallon

from

$29.99
PEAK BlueDEF PLATINUM with advanced SYSTEM SHIELD technology is a groundbreaking premium Diesel Exhaust Fluid with a proprietary formula to tackle deposits that can build up in the SCR system.

Product Features:
  • Uses advanced SYSTEM SHIELD technology to reduce future deposits
  • Maintains optimum fuel economy
  • Saves money on costly repairs
  • Sustains the life of your SCR system
  • Compatible with all diesel SCR systems
  • Tested to meet or exceed the strictest OEM standards
  • Conforms to the ISO-22241-1 specification for DEF, and is an American Petroleum Institute (API) certified diesel exhaust fluid
  • America’s No. 1 brand of Diesel Exhaust Fluid
See More

FRAM – Diesel Exhaust Fluid (DEF): 2.5 Gallon (Part No.457)

Diesel Exhaust Fluid (DEF): 2.5 Gallon

from

$9.99
FRAM Diesel Exhaust Fluid (DEF) is a non-toxic solution engineered to help diesel-powered vehicles reduce emissions and improve fuel economy.

Product Features:
  • For use in Selective Catalytic Reduction (SCR) systems on diesel engines.
  • Diesel exhaust fluid is non-toxic and safe to handle
  • Stable, colorless and odorless, and also meets ISO Standards 22241 for purity and composition
See More

PEAK – Blue DEF Diesel Exhaust Fluid, 2.5 Gallon (Part No.DEF002)

Blue DEF Diesel Exhaust Fluid, 2.5 Gallon

from

$19.99
PEAK BlueDEF Diesel Exhaust Fluid is a mixture of high purity synthetic urea and deionized water that is used in Selective Catalytic Reduction (SCR) systems in diesel vehicles. DEF is used to help convert NOx to harmless nitrogen and water.

Product Features:
  • BlueDEF’s Purity Guarantee is our assurance the DEF your are purchasing has been tested to meet or exceed the strictest OEM standards
  • America’s #1 brand of Diesel Exhaust Fluid
  • Conforms to the ISO-22241-1 specification for DEF, and is an American Petroleum Institute (API) certified diesel exhaust fluid
  • Compatible with all diesel SCR systems
  • Non-flammable formula makes handling safe and easy
See More

Most Popular Diesel Emissions Fluids for 2018 Mack GU5s

Enhance your 2018 Mack GU5 with one of the 3 Diesel Emissions Fluids we have in stock, starting at just $9.99.

PEAK – Blue DEF Diesel Exhaust Fluid, 2.5 Gallon (Part No.DEF002)

Blue DEF Diesel Exhaust Fluid, 2.5 Gallon

from

$19.99
PEAK BlueDEF Diesel Exhaust Fluid is a mixture of high purity synthetic urea and deionized water that is used in Selective Catalytic Reduction (SCR) systems in diesel vehicles. DEF is used to help convert NOx to harmless nitrogen and water.

Product Features:
  • BlueDEF’s Purity Guarantee is our assurance the DEF your are purchasing has been tested to meet or exceed the strictest OEM standards
  • America’s #1 brand of Diesel Exhaust Fluid
  • Conforms to the ISO-22241-1 specification for DEF, and is an American Petroleum Institute (API) certified diesel exhaust fluid
  • Compatible with all diesel SCR systems
  • Non-flammable formula makes handling safe and easy
See More

FRAM – Diesel Exhaust Fluid (DEF): 2.5 Gallon (Part No.457)

Diesel Exhaust Fluid (DEF): 2.5 Gallon

from

$9.99
FRAM Diesel Exhaust Fluid (DEF) is a non-toxic solution engineered to help diesel-powered vehicles reduce emissions and improve fuel economy.

Product Features:
  • For use in Selective Catalytic Reduction (SCR) systems on diesel engines.
  • Diesel exhaust fluid is non-toxic and safe to handle
  • Stable, colorless and odorless, and also meets ISO Standards 22241 for purity and composition
See More

BlueDEF – PLATINUM Diesel Exhaust Fluid, 2.5 Gallon (Part No.DEG002)

PLATINUM Diesel Exhaust Fluid, 2.5 Gallon

from

$29.99
PEAK BlueDEF PLATINUM with advanced SYSTEM SHIELD technology is a groundbreaking premium Diesel Exhaust Fluid with a proprietary formula to tackle deposits that can build up in the SCR system.

Product Features:
  • Uses advanced SYSTEM SHIELD technology to reduce future deposits
  • Maintains optimum fuel economy
  • Saves money on costly repairs
  • Sustains the life of your SCR system
  • Compatible with all diesel SCR systems
  • Tested to meet or exceed the strictest OEM standards
  • Conforms to the ISO-22241-1 specification for DEF, and is an American Petroleum Institute (API) certified diesel exhaust fluid
  • America’s No. 1 brand of Diesel Exhaust Fluid
See More

FAQs for 2018 Mack GU5 Fluids

What are the best-selling Fluids for 2018 Mack GU5s?

Out of 3 Fluids that fit 2018 Mack GU5s, the following parts are the top sellers:

What’s the price range for 2018 Mack GU5 Fluids?

The prices of Fluids for the 2018 Mack GU5 range from $9.99 up to $29.99 for the most premium parts.

What is the average price of a Fluids Fluid for a 2018 Mack GU5?

The average price for Fluids for the 2018 Mack GU5 is $19.99. 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 Mack GU5 model years?

Yes, we carry Fluids for 6 model years of Mack GU5s between 2012 and 2017. The following model years are the most popular for Fluid purchases: 2017, 2016, 2015, 2014, 2013, and 2012.

What are the cheapest Fluids for my 2018 Mack GU5?

The cheapest 2018 Mack GU5 Fluids we carry are:

Does Advance Auto Parts sell Fluids for any other 2018 Mack models?

Yes. We stock Fluids for 6 other popular 2018 Mack models. Some of the most popular are 2018 GU8 Fluids, 2018 GU7 Fluids, 2018 CHU Fluids, 2018 CXU Fluids, and 2018 GU4 Fluids.

What types of Fluids do you sell for my 2018 Mack GU5?

We currently have just 1 Fluid in stock for a 2018 Mack GU5, and as of 2/5/25, it is a Diesel Emissions Fluid.

Can I get help with 2018 Mack GU5 Fluid orders?

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

What is your return policy for Mack GU5 Fluids?

Advance Auto Parts keeps returns simple. For new Mack GU5 Fluids and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.