DEF Guard Additive — SCR & DEF System Maintenance

Prevents Crystallization & Protects Your SCR System

MotorPower Care DEF Guard Additive is a high-performance DEF (AdBlue®) treatment designed to clean and prevent crystal buildup in Selective Catalytic Reduction (SCR) systems and AdBlue® urea dosing systems. Preventing crystallization reduces the risk of engine malfunctions, performance loss, and costly repairs associated with SCR system failures.

Key Benefits

✅ Prevents & Removes Crystallization – Cleans and prevents harmful crystal deposits in DEF (AdBlue®) metering systems, injectors, and SCR catalytic converters.
✅ Extends SCR System Lifespan – Protects critical SCR components from blockages, clogs, and injector failures.
✅ Improves Vehicle Performance – Ensures optimal DEF flow and injection, maintaining proper emissions control.
✅ Works for Both Prevention & Cleaning – Can be used proactively to prevent buildup and reactively to dissolve existing crystals.
✅ Safe & Effective Formula – Non-hazardous, non-corrosive, and non-irritant, making it safe for all diesel vehicles with a DEF (AdBlue®) system.

Application Instructions

Mixing Ratio:

• 250ml bottle treats up to 100 liters (26.42 U.S. gallons) of DEF (AdBlue®) fluid.
• Use 25ml per 10 liters (2.64 U.S. gallons) of DEF (AdBlue®).
• Do not overdose!

How to Use:

1. Measure the required amount using the bottle’s dosing chamber.
2. Mix directly with DEF (AdBlue®) solution before adding it to the vehicle’s DEF tank.
3. Repeat this process with each DEF refill for continuous protection.

Important Notes

⚠️ For diesel engines equipped with a DEF (AdBlue®) system only. Do not add to the diesel fuel tank.
⚠️ In systems using air pressure for urea injection, foaming may occur. This is normal and does not affect performance.