WoldoClean DEF Crystal Treatment diesel exhaust fluid additive 8.45 fl oz — ultra-concentrated 1:400, treats up to 26.4 gal

If your vehicle uses Diesel Exhaust Fluid (DEF) and has shown symptoms of crystallized deposits—such as warning lights, degraded NOx sensor performance, or blocked injector ports—this concentrated treatment is designed to help restore and preserve proper exhaust aftertreatment function. Delivered in an easy-dose bottle with an integrated dosing chamber, the formula mixes at 1:400 concentration so a single 8.45 fl oz bottle treats up to five typical DEF tank refills.

How does WoldoClean stop DEF crystallization?

The formulation is engineered to dissolve existing urea-based deposits and to leave a protective condition that reduces the risk of future crystal formation. It targets build-up in the SCR catalyst and NOx sensors without requiring system disassembly.

• Active agents designed to solubilize urea crystals and residues
• Compatible with common SCR materials and sensor components
• Helps maintain flow through injector ports and catalyst channels

How do I use it correctly during refills?

Each bottle has a built-in dosing chamber so you can measure the exact amount without tools. Squeeze the calibrated chamber and pour the measured dose directly into the DEF tank when filling—do not mix with diesel fuel or inject into fuel system components.

• Measure with the integrated chamber—no guessing or spills
• Add to the DEF tank at refill, then top up with DEF to mix
• Follow ratio guidance: one bottle treats ~26.4 gallons at 1:400

Which vehicles and systems is this safe for?

WoldoClean is suitable for heavy-duty trucks, semis, RVs, tractors and passenger diesel vehicles that use DEF-based SCR systems. It is formulated to be safe for equipment from major OEMs, provided the vehicle uses DEF and the manufacturer does not prohibit additives.

• Recommended for Ford, Ram, Chevy, GMC compatible SCR systems
• Meant for DEF tanks and aftertreatment components only
• Not to be added to diesel fuel or fuel tanks

What tangible benefits can I expect after treatment?

Using this ultra-concentrated cleaner regularly can help restore proper DEF flow, reduce error codes related to NOx sensors, and lower the chance of costly repairs caused by hardened deposits. Results vary by severity of fouling and service history.

• Helps dissolve existing crystallization and residues
• Promotes consistent DEF dosing and exhaust treatment
• May reduce frequency of sensor or injector maintenance

Who is this for: WoldoClean DEF Crystal Treatment is aimed at professional fleet managers, owner-operators, RV owners, and agricultural equipment users who want a preventive or corrective DEF additive that is strong, compact, and simple to apply. It suits anyone maintaining SCR-equipped diesel vehicles who prefers a high-concentration option that covers multiple refills per bottle. Always consult your vehicle manufacturer’s guidance before using any additive, and avoid adding the product to diesel fuel.