High Mileage Oil Treatment + Stop Leak - 443mL | STP15983C

STP High Mileage Oil Treatment (15983C / FLT129) is specially engineered for older or high-mileage vehicles (120,000 km+). Its advanced formula combats engine friction, reduces oil consumption, and boosts oil resilience with a viscosity-enhancing agent. By reinforcing the oil’s protective film, it helps maintain smoother operation, minimize wear, and extend engine life.

• Designed for vehicles with 120,000 km or more — supports aging or high-use engines. 
• Reduces metal-to-metal friction, helping protect internal components from wear. 
• Helps reduce oil consumption in older engines. 
• Fortifies oil with a viscosity enhancer, improving its film strength under stress. 
• Comes in a 443 mL bottle — treat rate aligns with typical crankcase oil volumes. 
• Easy to use: simply add during an oil change for best results.