STP Engine Flush – 450 ml

Description:

A scientifically‑engineered flush that deeply cleans engine internals—dissolving sludge, varnish, and deposits on cylinder heads and oil passages. Compatible with both conventional and synthetic oils, for petrol or diesel engines (gasoline, diesel, turbocharged)  .

How it works:

Pour the full bottle into your warm engine’s old oil; let it idle for 5–15 minutes (engine ON, NOT driven), then drain and replace oil and filter.  

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⚙️ Community Feedback

> “Oil came out like water when I drained it… now the dipstick is clear as when I first bought the oil… I recommend doing this if your jeep is used up like mine, 153k miles!”  

“Car feels like new, drives a lot smoother. On long trips I get over 32 MPG.”  

Some note that engine flushes are not necessary for regularly maintained modern engines, and may risk loosening deposits that can clog filters.  

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✅ Key Benefits

Deep cleaning of sludge and varnish

Acid neutralization and deposit protection

Seal conditioning, reducing minor oil leaks

Improves oil flow, engine smoothness, and may slightly enhance MPG

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⚠️ Recommendations

Use only in worn or high-mileage engines with signs of sludge buildup

Do not drive while flush is active—let idle only

Always follow with a fresh oil and filter change

Not suitable for engines under warranty without verification from manufacturer recommendations