MotorKote UCL Upper Cylinder Lubricant Fuel Injector Cleaner 5.25 oz

Regular price $4.99 Sale price $4.49 Save $0.50
-1379 in stock

MOTORKOTE Upper Cylinder was formulated to bring additional upper cylinder lubrication and to clean fuel injectors and prevent deposits from forming. 

Compatible in both fuel and diesel engines and more concentrated fuel cleaning capability then the brand leader.


  • Increases Horsepower

  • Removes Valve Stem Gum

  • Reduces carbon build up the cause of: Pre-ignition, power loss, burned valves, broken rings

  • Restores Power and engine performance

  • Increases fuel efficiency

  • Cleans injectors to Reduce: Power loss, hesitations, pinging/dieseling, loss of fuel economy

MOTORKOTE Upper Cylinder Lubricant is safe for use in all catalytic converters, carburetors, and fuel injection systems and will not void warranties.


Add full 5.25 oz bottle to 25 Gallon Fuel Tank every fill-up or as needed. on most passenger vehicles. Larger (Diesel) engines use 1 ounce per 5 Gal of fuel.

Can be used with MotorKote Fuel Optimizer or MotorKote Low Sulfur Lube in Diesel engines, alternate products between fill-ups.


Proposition 65 Warning for California Consumers:

⚠️WARNING: This product can expose you to chemicals including Cumene, which is known to the State of California to cause cancer. For more information go to

Customer Reviews
4.8 Based on 17 Reviews
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Bill R.
United States United States
I recommend this product
Make engines last longer

Motorkote Upper Cylinder Lube provides lubrication to parts not covered by motor oil. These parts are Fuel injectors, Top ring, Upper part of cylinder which tends to dry out from heat, and the intake valve stem. UCL is an excellent complement to high quality motor oil .

United States United States
I recommend this product

Love it. It give your vehicle better gas mileage and more pep to its step.

A Customer
Alan R.
United States United States
I recommend this product
Love Motor Kote it does the job

I feel more power when I step on my gas pedal, ever since I have been using your product I put one bottle in a month and it works fine for me with city driving.

Jeremy W.
United States United States
I recommend this product
First time user of the UCL

Haven’t been able to put enough miles on to notice a difference. Longer time user of the spray and hyper lubricant.

Phillip R.
United States United States
I recommend this product
Must be working

I'm on my second round of filling my tank up using both The MK UCL and Fuel Injector Cleaner and my 06 Corolla with 174,000 miles feels like it has a more responsive pedal. I will be using this in my motorcycle(04 Honda VTX1300) which has 104,000 miles