Purpose and Specifications

STP Diesel Particulate Filter Cleaner is a fuel additive designed to remove soot particles and carbon buildup from diesel particulate filters (DPF). This 200ml treatment is formulated for diesel vehicles manufactured after 2009 that are equipped with a standard DPF system.

Key Benefits:

• Unclogs blocked or partially blocked diesel particulate filters
• Removes accumulated unburnt soot to restore filter function
• Reduces harmful exhaust emissions
• Restores engine power and acceleration
• Prevents future soot buildup
• Particularly effective for stop-and-start driving patterns (city driving, taxi use, school runs)

How It Works: The additive contains metal oxide particles that accelerate soot burnout at lower temperatures, allowing your DPF to regenerate without requiring extended high-temperature driving.

When to Use / Replace?

Treatment Schedule: Add one 200ml bottle to your fuel tank every 1,800 miles (approximately 3,000 km). One bottle treats a full tank of 50-60 liters.

If Your DPF Warning Light Is On: Add the treatment to a full tank of fuel and drive on a motorway or dual carriageway for at least 20 minutes to enable proper soot burnout. Heavily blocked filters may require repeat treatments for stage-by-stage cleaning.

Compatibility: Safe to use with other STP additives. Suitable for all diesel engines with standard built-in or retrofitted DPF systems. Not recommended for heavy-duty trucks with continuously regenerating traps.

Frequently Asked Questions

Q: How often should I use this product?
A: Use every 1,800 miles or 3,000 km. Regular treatment prevents soot accumulation and keeps your DPF functioning properly, especially if you do mostly city driving.

Q: Will this work if my DPF filter is completely blocked?
A: Yes, but heavily blocked filters may require multiple treatments. Add the product to a full tank and drive on a motorway for at least 20 minutes to help the soot burn out. Repeat if necessary.

Q: Is this safe for my diesel engine?
A: Yes, STP Diesel Particulate Filter Cleaner is specifically formulated for diesel engines with DPF systems and is safe to use alongside other STP fuel additives.