Purpose and Specifications

Wynn's 12293 Diesel Extreme Cleaner is a premium 500ml fuel additive designed to deeply clean and protect your diesel engine's fuel system. This clear, colorless liquid dissolves tough deposits from injectors, fuel lines, pumps, tank, and valves, while neutralizing harmful acids for smoother operation.

Key practical benefits:

• Restores steady idle and prevents hard starts by fixing injector spray patterns
• Boosts fuel efficiency and cuts emissions for better mileage and cleaner exhaust
• Lubricates and safeguards high-pressure systems like TDI and HDI against wear
• Safe for Euro 5/6 engines, DPF filters, catalytic converters, and biodiesel up to B30

One 500ml bottle treats up to 60 liters of diesel. For heavy buildup, use on at least 30 liters. Add directly to the tank before refueling.

When to Use / Replace?

Use every 3,000 km or every 3rd tank fill to keep your fuel system spotless and reliable. Ideal for regular maintenance in trucks, cars, boats, or stationary engines. Shelf life is typically 3-5 years when stored in a cool, dry place between 5°C and 30°C.

Frequently Asked Questions:

Can I use it in modern common rail diesels?
Yes, it's fully compatible with high-pressure common rail, pump injectors, and after-treatment systems like DPF—no harm guaranteed.

How soon do I notice results?
Many drivers report smoother idling and better power after one tank; full benefits show in 400-500 km of driving.

Is it safe for biodiesel blends?
Absolutely, works with diesel and blends up to B30 without issues.