STP 450ml Engine Flush

Product code: GST62450EN06

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£4.99

£4.16 ex. VAT

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STP Engine Flush – 450ml

Part Number: GST62450EN06

Take Note! Compatible with single and multi-grade mineral or synthetic motor oils. Suitable for petrol and diesel engines.

STP® Engine Flush is specially formulated to neutralize harmful engine acids while loosening and removing sludge, varnish, and gum deposits. It thoroughly cleans the engine to ensure that fresh oil remains uncontaminated, improving lubrication life and performance. Suitable for both petrol and diesel engines, it also frees sticking internal components for smoother operation.

How It Helps

• Loosens and removes harmful sludge, varnish, and deposits
• Neutralises acids and thoroughly cleans the engine
• Frees sticking internal components
• Ensures new oil remains clean and uncontaminated
• Improves lubrication life and engine protection

Usage Directions

• Do not drive vehicle when using STP® Engine Flush.
• Ensure oil in crankcase is at normal level.
• Run engine until it reaches normal operating temperature and switch off.
• Add entire 450ml bottle to crankcase (treats 3–6 litres of oil).
• Start engine and run at fast idle for 15 minutes.
• Switch off and carefully drain oil while still hot.
• Replace oil filter and refill with fresh oil.
• For added protection, follow with STP® Oil Treatment.

Usage Frequency: Use at every oil change

Product Characteristics

• Type: Engine flush / pre-oil change cleaner
• Volume: 450ml
• Treats: 3–6 litres of engine oil
• Compatibility: Petrol & diesel engines, mineral & synthetic oils
• Function: Removes sludge, acids, varnish & deposits
• Usage: At every oil change

Also Available

▶ Fuel & Exhaust Treatments

• STP Petrol Treatment – 200ml
• STP Petrol Injector Cleaner – 200ml
• STP Diesel Treatment – 200ml
• STP DPF Cleaner – 200ml

▶ Oil Treatments

• STP Oil Treatment (Petrol) – 300ml
• STP Oil Treatment (Diesel) – 300ml
• STP Engine Flush – 450ml

▶ Spray Cleaners

• STP Carb Spray Cleaner – 500ml
• STP Heavy Duty Engine Degreaser – 500ml
• STP Power Steering Fluid – 350ml

Product alternatives

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WYN51265

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