Specifically designed for diesel engines, ACDelco Diesel Exhaust Fluid (DEF) is an aldehyde free, NOx (Nitrous Oxide) reducing treatment. ACDelco Diesel Exhaust Fluid is the stable, colorless, non-flammable, non-toxic primary component used to help convert NOx, an environmental pollutant, into harmless nitrogen and water. ACDelco Diesel Exhaust Fluid is a mixture of 32.5% high purity synthetic urea and 67.5% deionized water. Classified as minimum risk for transportation, ACDelco Diesel Exhaust Fluid meets the stringent ISO 22241 standard for purity and concentration, meets API regulations, and meets or exceeds GM OE specifications.
Can NOx harm the environment?
Yes, nitrous oxides (NOx) are byproducts of combustion that can lead to the generation of atmospheric smog when in high enough concentrations.
Is it required by law to use diesel exhaust fluid with my diesel engine?
No, though diesel exhaust fluid is currently one of the most popular methods for controlling diesel exhaust pollutants. Diesel exhaust fluid must be used for those vehicles that are manufactured with Selective Catalytic Reduction technology.
Do I mix diesel exhaust fluid with my engine oil or other engine components?
No, diesel exhaust fluid must never be mixed with any other fluid. It must never be diluted with water.
Is there a way to check if ACDelco Diesel Exhaust Fluid is recommended for my vehicle?
Yes. Though ACDelco DEF meets all OEM quality standards for vehicles using Selective Catalytic Reduction technology, check your owner's manual to confirm that you require DEF for your vehicle.
Do I need to change my diesel exhaust fluid?
No, diesel exhaust fluid is never changed, it is burned just like diesel fuel. The DEF tank will need to be refilled at approximately the same frequency as an oil change.
Do all diesel engines require the same amount of DEF?
No, Diesel exhaust fluid usage varies by driving style, fuel mileage and miles driven. Be prepared to refill the tank when the 1000 mile warning is displayed.
†Retail customers with a U.S. mailing address only. Rebate valid on minimum purchase of four spark plugs and maximum of 16 spark plugs per household. Allow 6 to 8 weeks for delivery of rebate check. See acdelco.com or gmpartsrebates.com for details and rebate form, which must be postmarked by 10/31/21. Offer ends 9/30/21.
†Mail-in rebate available only to Independent Service Centers, Body Shops, or Commercial Fleets with a U.S. mailing address. Limit 15 rebates per business. Not available with some other offers. Government and municipal fleets are excluded. Allow 6 to 8 weeks from promotion end date for delivery of Visa® Prepaid Card. Visa Prepaid Card will be issued in the business name. Visit your my GM Partner Perks dashboard or see gmpartsrebates.com for complete details, eligible parts, and rebate form, which must be postmarked by 7/15/21. Offers end 6/30/21.