Upper Cylinder Lubricant Corrosion Inhibitor
Upper Cylinder Lubricant Corrosion Inhibitor lubricates upper cylinders to fight wear, inhibits ethanol-related corrosion and keeps injectors clean — extending engine life at every fill-up. It delivers 18% more lubricity than Lucas and 20% more than Sea Foam for better retention of horsepower and fuel economy.1 Treats 25 gallons; use every tank.
Why this product
- Lubricates upper cylinders to fight wear — extending engine life at every fill-up.
- Inhibits ethanol-related corrosion and keeps injectors clean.
- 18% more lubricity than Lucas, 20% more than Sea Foam for better retention of horsepower and fuel economy.1
- Designed to work hand-in-hand with P.i. Performance Improver; capless-compatible; E85-safe.
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Become a Preferred Customer →Upper Cylinder Lubricant Corrosion Inhibitor — FAQ
P.i. is the deep-cleaning additive — it cleans the entire fuel system and restores like-new performance every 4,000 miles. Upper Cylinder Lubricant is the maintenance product — it lubricates upper cylinders, fights ethanol corrosion and keeps injectors clean at every fill-up.
Yes — both products can be used together in one tank of gasoline. Deep-clean with P.i. every 4,000 miles, keep clean with Upper Cylinder Lubricant every tank.
Yes — they're formulated for all gasoline engines, including the direct-injected and turbocharged engines across the Toyota and Lexus lineup, and they're compatible with E85 and capless fuel systems.
Keep reading
1 Based on independent testing of AMSOIL Upper Cylinder Lubricant, Lucas Upper Cylinder Lubricant and Sea Foam Motor Treatment obtained on 02/13/2019 using ASTM D6079 modified for use with gasoline. Price shown is AMSOIL's current online retail price, synced weekly. Checkout completes on amsoil.com; orders are sold, shipped and fulfilled by AMSOIL Inc. Tuned Yota is an Authorized AMSOIL Dealer.