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Diesel Exhaust Fluid Comparison - October 2025
| 1 Best Choice  9.7Exceptional | 2  9.5Excellent | 3 Best Value  9.4Excellent | 4  9.2Excellent |
| View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon |
ModelBlue Def DEF002-4PK Diesel Exhaust Fluid, 2.5 Gallon, 4 Pack | Model Blue Def DEF002-2PK Diesel Exhaust Fluid, 2.5 Gallon, 2 Pack | Model BlueDEF DEF330 Diesel Exhaust Fluid - 330 Gallon Tote | Model Prime Guard PRIM00250 DEF Diesel Exhaust Fluid - 2.5 Gallon |
BrandBlueDEF | Brand Blue Def | Brand BlueDEF | Brand Prime Guard |
Reviews | Reviews  | Reviews | Reviews |
Tech Specs | |||
product dimensions 12 x 20 x 10 inches | product dimensions 20 x 10 x 10 inches | product dimensions 47.25 x 39.38 x 45.75 inches | product dimensions 12.25 x 10.5 x 8.25 inches |
item weight 23 pounds | item weight 23 pounds | item weight 2635 pounds | item weight 24.5 pounds |
customer reviews4.6 4.6 out of 5 stars 768 ratings 4.6 out of 5 stars | customer reviews 4.6 4.6 out of 5 stars 1, 482 ratings 4.6 out of 5 stars | customer reviews 4.5 4.5 out of 5 stars 165 ratings 4.5 out of 5 stars | customer reviews 4.2 4.2 out of 5 stars 44 ratings 4.2 out of 5 stars |
manufacturer part number- | manufacturer part number DEF002-2PK | manufacturer part number DEF330 | manufacturer part number DEF002 |
Available On  | Available On | Available On | Available On  |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.7
1
BlueDEFBlue Def DEF002-4PK Diesel Exhaust Fluid, 2.5 Gallon, 4 Pack
Why we love it
This product can help your car go further on one tank of gas.
This product can help reduce emissions of NOx.
This product is a universal fit.
Main highlights- When used in an SCR system will reduce the levels of NOx emissions of those engines
- One gallon of is used approximately every 300 miles
- Fit type: Universal
- A truck with a 20 gallon DEF tank can go up to 6000 miles between fill-ups
-
9.5
2Blue Def
Blue Def DEF002-2PK Diesel Exhaust Fluid, 2.5 Gallon, 2 Pack
Why we love it
Long intervals between fill-ups, up to 6000 miles.
Reduces harmful NOx emissions effectively.
Convenient doorstep delivery at a competitive price.
Main highlights- When used in an SCR system will reduce the levels of NOx emissions of those engines
- One gallon of is used approximately every 300 miles
- A truck with a 20 gallon DEF tank can go up to 6000 miles between fill-ups
-
9.4
3
BlueDEF
BlueDEF DEF330 Diesel Exhaust Fluid - 330 Gallon Tote
Why we love it
Reduces emissions.
Improves fuel economy.
Non toxic formula.
Main highlights- Meets ISO Standards 22241 for Purity and Composition
- Includes a 330 Gallon Tote System
- Improve Fuel Economy By Up To Five Percent While Reducing Exhaust Emissions
- Featuring a Non Toxic Solution of 67.5-Percent Purified Water and 32.5-Percent Ultra Pure Automotive Grade Urea
- An American Petroleum Institute (API) Certified Diesel Exhaust Fluid
Our ranking system
At BestChoice.com, our team curates a selection of top products from a vast array available online, using a sophisticated ranking system based on carefully defined criteria.While traditional hands-on testing has its merits, our use of AI technology offers distinct advantages. AI allows us to process and analyze vast amounts of data from multiple sources, providing a comprehensive view that goes beyond what manual testing can achieve. This approach enables us to deliver insights that are aligned with current trends and consumer preferences, ensuring our reviews are both relevant and up-to-date.
Features
Our AI-driven analysis examines key attributes, capabilities, and other critical factors tailored to each product category. This method allows us to assess effectiveness from various perspectives, ensuring a well-rounded evaluation.
Consumer Reviews
We aggregate and evaluate consumer feedback from across the internet, giving weight to ratings and reviews that reflect the most reliable insights. AI enhances this process by filtering and prioritizing data, offering a balanced view without the need for direct personal endorsements.
Popularity
Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.
Value for money
AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.
