Introducing BlueDEF PLATINUM™ – A Breakthrough Innovation In Diesel Exhaust Fluid (DEF). BlueDEF PLATINUM™ with exclusive ADVANCED SYSTEM SHIELD™ TECHNOLOGY is designed to significantly reduce harmful deposits in the selective catalytic reduction.
BlueDEF PLATINUM 2.5 Gallon DEF Fluid
20% OFF $125+ WITH PROMO CODE: GREEN20, Online Only
Get 20% off $125 with promo code GREEN20. Online, ship to home only. 04/23/26 – 04/27/26. *Maximum discount $50.
20% off $125+: Valid on regularly priced in-stock items for Ship to Home orders that when purchased together total $125 or more (before tax, shipping and discount) on the website only. Excludes AIRAID, B&M, Bully Dog, DeVilbiss, Edelbrock, Flowmaster, Holley, Hurst, Ingersoll-Rand, K&N, MSD, SCT, and Spectre items.
To Redeem Offer: Add qualifying items totaling $125 or more to your shopping cart and select “Ship” as your delivery method. Enter promo code GREEN20 in the cart. The total in your shopping cart will be adjusted after promo code is applied. Excluded brands contribute toward minimum purchase amount to qualify for offer but are not eligible for discount. (Maximum $50.00 Discount.) Valid Thursday, April 23rd to Monday, April 27th, 2026 (11:59pm Hawaii Time Zone). Coupon code is not redeemable for cash, is nontransferable and cannot be replaced if lost or stolen. Not valid on same-day delivery orders. Void if copied, transferred or where prohibited by law. Customer pays sales tax and shipping fees.
Offer subject to adjustment due to returns, cancellations and exchanges. Additional taxes and duties may apply. Not valid with any other promotional gift with purchase. Offer may be modified or discontinued at any time without notice.
Offer Terms: Offer does not apply to gift card orders. Offer does not apply to Lead-Acid batteries. Cannot be used in combination with any other certificates, offers, or discounts or for payment on account. Not valid on previous purchases or store purchases. Shipping & handling and taxes do not qualify towards the minimum purchase. Valid for retail customers only. OReillyAuto.com only ships orders within the U.S.
Excluded Brands: Offer does not apply to AIRAID, B&M, Bully Dog, DeVilbiss, Edelbrock, Flowmaster, Holley, Hurst, Ingersoll-Rand, K&N, MSD, SCT, and Spectre items.
Put Trust in your Truck
BlueDEF PLATINUM™ is formulated to exacting international standards and backed by our Purity Guarantee, ensuring that only high-quality DEF is in your truck. BlueDEF Platinum meets ISO Standards 22241 for purity and composition and is an American Petroleum Institute (API) certified diesel exhaust fluid.
ADVANCED SYSTEM SHIELD Technology
With continual use, BlueDEF PLATINUM™ with ADVANCED SYSTEM SHIELD™ technology reduces the formation of future deposits that build up in your diesel exhaust system.
Why are Deposits Bad?
Deposits create back pressure which can increase fuel consumption and reduce engine power.
BlueDEF Platinum’s ADVANCED SYSTEM SHIELD™ Technology will maintain performance, power, and fuel economy mile after mile.