MotorKote UCL Upper Cylinder Lubricant with Fuel Injector Cleaner 64 oz

Regular price $26.99 Sale price $22.00 Save $4.99
-537 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 than 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 & Fuel Injector Cleaner,  is safe for use in all catalytic converters, carburetors, and fuel injection systems and will not void warranties.


Add full 5 ounces to 25 Gallon Fuel Tank every fill-up, maintain the ratio of 1 ounce per 5 Gal of fuel (Gas or Diesel).

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
5.0 Based on 11 Reviews
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Filter Reviews:
John W. Holcombe
United States United States
I recommend this product

2nd purchase of UCL Upper Cylinder Lubricant

I am using this in two vehicles. Both get excellent reviews from their mechanics. My Pontiac Montana has over 170,000miles and runs like new. (the transmission sucks)

Nicolae M.
United States United States

Good product

Good product

John J.
United States United States

Great Results from Stiction Remover

With in 2000 miles the truck was running smoother and had better performance! I also increased my mpg by 1 mile per gallon, I’m very PLEASED with my results

Jared C.
United States United States

Works great

Been using it for a few months now on my dad’s 7.3 f250 and it is cleaning his injectors very well and has stopped the motor from rocking really bad from the injectors having bad fuel flow.

Marius D.
United States United States

injector cleaner

perfect i feel the difference in my truck

Russ B.
United States United States

Upper cylinder lubricant

Great product I have gained mpg out of my Chevy 6.0 MotorKote UCL Upper Cylinder Lubricant with Fuel Injector Cleaner 64 oz Review
leo g.
United States United States

ucl great product

adding more lubricity ,and cleaning power to any fuel



I used Hyper Lube, after seeing it on TruckU and finding it on Project Farm in my research, on a noisy rebuilt power steering pump which was silenced in seconds before my very ears. I then bought some UCL to try it against the leading dime store competitor which I've used for years with no complaints. Boy am I happy I tried it. We put it in my sons '08 Saab 9-3 with 105k mi, which would not stop tripping a check engine light for multiple cylinder misfires and also suffering from rough idles. We tried everything, including replacing the injectors. We did an oil change with Hyper Lube added and he started using UCL. It did it again...Before the next fill-up the rough idles subsided and no more misfires. Are you kidding!!! Motorkote is great! If you could only solve hair loss. Oh, and sell it in 1gal jugs. Thank you


Made me drop the MMO

I was an MMO fan for many years, but this stuff is much better! Better lubricity and cleaning abilities! Anyone can benefit from using this, new or classic engines.



ucl is an excellent product. egr valve in my car sticks and triggers check light. i had to dismandle and clean the valve every month, until i used ucl.the valve never sticked again for more than a year


Awesome Products

I have used this product over the past few months and I can see the difference in my Denali pickup and Jeep Rubicon. I use all of the Motorkote products, the hyper lubricant, the fuel optimizer, the octane booster, All Stop, and Power Steering fluid. You guys do an awesome job and my vehicles, and my family's vehicles show the proof. My lifters went out in my Denali this summer and the GM garage told me that the engine looked awesome and actually there wasn't as much damage as they expected. The oil sending senor is what caused the problem, no fault of Motorkote, but the motorkote products protected the rest of the engine.