Has your fuel economy decreased over time? Do you ever notice performance issues like a stumble or hesitation when you accelerate? Do you have concerns about performance reducing carbon buildup? If you answered yes to any of these questions, AMSOIL's high performance gasoline fuel additives may be the solutions for you.
When it comes to maintaining your fuel system, we offer two high quality products:
 | AMSOIL P.i. Performance Improver As an engine ages, it can suffer from gasoline-generated deposits that form on the fuel injectors, intake valves and combustion chamber. Also, ethanol is common in today’s fuel. It can cause moisture to enter your engine, often leading to corrosion and premature wear. This is where AMSOIL P.i. Performance Improver comes in P.i. Performance Improver is our deep cleaning additive. Its potent additive package works to clean your fuel system top to bottom to revive your engine to like- new condition |
 | AMSOIL Upper Cylinder Lubricant Many newer engines use direct fuel injection for increased fuel efficiency and high-power output. This new technology is great. However, it can promote carbon buildup, resulting in reduced performance. If your vehicle uses direct injection, AMSOIL Upper Cylinder Lubricant should be part of your regular maintenance routine Think of AMSOIL Upper Cylinder Lubricant as a maintenance product. The main feature of this product is to regularly lubricate upper cylinders to prevent wear. In terms of cleaning, its focus is on injectors. Upper Cylinder Lubricant is also a great tool to fight ethanol-related corrosion |
| Two Steps for a Clean & Protected Engine Step 1 Deep clean with P.i. Performance Improver every 4,000 miles / 6400 km • Cleans fuel injectors, intake valves and combustion chamber deposits • Remissions and increases fuel economy Step 2 Keep clean with Upper Cylinder Lubricant in every tank • Lubricates upper cylinders to fight wear • Inhibits ethanol-related corrosion • Keeps injectors clean |  |
Where to Buy
1. Order Online – Fast Delivery
Order online using the links above and receive your products delivered directly to your door. Shipping options, promotions and delivery times may vary, so please refer to the AMSOIL website for current details.
2. Become a Preferred Customer
Preferred Customers receive discounted pricing, earn reward points on qualifying purchases, receive exclusive promotions and more. Simply add a Preferred Customer membership to your cart when ordering to receive discounted pricing and other membership benefits.
Order online using the links above and receive your products delivered directly to your door. Shipping options, promotions and delivery times may vary, so please refer to the AMSOIL website for current details.
2. Become a Preferred Customer
Preferred Customers receive discounted pricing, earn reward points on qualifying purchases, receive exclusive promotions and more. Simply add a Preferred Customer membership to your cart when ordering to receive discounted pricing and other membership benefits.
