Overview: The STP Ultra 5-in-1 Fuel System Cleaner features a potent combination of STP® WEARGUARD technology, including detergents, power boosters, and friction modifiers, designed to thoroughly cleanse and enhance your vehicle’s fuel system.
Key Features / Benefits:
Reduces friction and prevents corrosion within the fuel system 
Enhances engine performance by removing deposits and restoring efficiency
Improves fuel economy and facilitates smoother engine operation 
Suitable for all types of engines, including classic and modern models.
Usage / Application: 
 For optimal results, add the entire bottle to a full fuel tank, treating between 50-60 liters. It is advised to use this cleaner every 4,000 miles or 6,400 kilometers to maintain peak engine performance