Purpose and Specifications

STP Start-Stop Petrol Engine Cleaner 200ml is specially formulated for petrol start-stop engines that automatically shut off when stationary to save fuel and cut emissions. These engines endure up to 10 times more start-stop cycles than regular cars - around 500,000 events over their lifetime - making them prone to deposit buildup in the fuel intake system.

This cleaner removes tough deposits, varnish, and sludge from fuel injectors and intake valves, restoring smooth power, better acceleration, and reliable starts. It protects key engine parts to cut wear, improves fuel economy during frequent city stop-start driving, and lowers exhaust emissions for cleaner running.

• Treats: Up to 70 litres of petrol per 200ml bottle
• Usage interval: Every 2000 miles (3000 km) or every 3 months for high-use vehicles
• Shelf life: 3-5 years unopened in cool, dry storage (0-30°C)
• Compatible: Modern petrol start-stop cars like VW, BMW, Audi, Ford with auto stop-start tech

Simply pour one bottle into a full tank before filling up - no tools needed, works while you drive.

When to Use / Replace?

Use at the first sign of sluggish acceleration, rough idling, power loss, or rising fuel use in your start-stop petrol engine. Ideal for routine maintenance every 2000 miles to prevent deposits from frequent restarts. Replace treatment at this interval to keep performance high; in heavy traffic, check every 2 months.

Expect noticeable smoother running and better economy after one tank. Safe for catalytic converters and oxygen sensors.

FAQ

Is this safe for my regular petrol engine without start-stop?
Yes, it cleans any petrol engine but shines in start-stop models due to extra deposit risks from 500,000+ cycles.

How soon do I feel results?
Most drivers notice peppier throttle and less hesitation after 100-200 km as deposits dissolve.

Can I use it every fill-up?
No, stick to every 2000 miles to avoid overuse; it's a targeted cleaner, not daily additive.