Keep your engine running smoother for longer with STP Smoke Treatment – your trusted solution to reduce visible exhaust smoke and protect high-mileage engines. Specifically engineered for older engines that burn oil, this powerful oil additive helps restore performance by boosting oil viscosity, minimizing oil consumption, and reducing wear on engine components.

Perfect for gas and diesel engines, STP Smoke Treatment enhances your engine’s performance by forming a protective layer against friction, helping to lower engine noise and improve overall efficiency. Whether you're dealing with a smoky startup or a high-mileage vehicle that needs extra care, STP has your back.

• 👉 Ideal for cars, trucks, vans, and SUVs. Easy-to-use formula—just pour it in with your regular engine oil. Drive cleaner, drive longer.
• 🔧 Reduces Exhaust Smoke – Formulated to reduce visible tailpipe smoke caused by burning oil in older, high-mileage engines.
• 🛡️ Protects Engine Components – Creates a thicker oil cushion for enhanced engine protection against friction and wear.
• 🚗 Boosts Oil Viscosity – Helps thicken motor oil to improve performance and reduce oil consumption in worn engines.
• 🏁 Compatible with Gas & Diesel Engines – Works with both gasoline and diesel engines – great for cars, trucks, vans & SUVs.
• ✅ Easy to Use – Just pour directly into your engine oil – one 443ml bottle treats up to 4 liters of motor oil.