This is used for Marine Engines ie Mercury brand, in which they don't have o2 sensors. If your using it in a car, your wasting a ton of money vs STP or something and i will ruin o2 sensor on a car

Is this how they call quickleen lubricant

Hi too the best of my knowledge it is fuel system cleaner nothing more however it may have some lubricating qualities. I do know that it works well if you use it on a regular basis.I use quickleen 1 with every fill up along with stabil for marine use it helps keep the moisture out of the fuel system.

will this cleaner free up compression relies valves?

I use this more on the preventative side and not fixing carbon build up or other material build up. I do understand you can use a higher dose of this additive and run the engine at lower rpms to help eliminate some of the build up. All depends on how dirty your valves have gotten. I have been using this additive for the past three years or almost 1800 hours on my engine. I have never had any issues with build up.

Does it also act as a gass stabilizer for winter storage?

It is a fuel system and injector cleaner. I used Marine Stabilizer in my fuel tank for winter storage.

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Mercury Marine Quickleen Engine and Fuel System Cleaner, 12 Ounces 92-8M0047931

Product ID: 649379544

Details

Automotive Fit Type
Universal Fit
Brand
MERCURY
Core material
Platinum
Thread size
RM
Vehicle service type
Watercraft

⛽Cleans 60 gallons fuel

🔥Removes stubborn carbon deposits

⚙️Prevents engine knocking & seize-up

8228 som

Duties & taxes included

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Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power up your engine’s potential with Mercury Quickleen!

CARBON CRUSHER - Eradicates carbon buildup from carburetors, injectors, valves, and spark plugs to boost performance.
ENGINE GUARDIAN - Prevents knocking and piston seize-up, protecting your investment during every ride.
SPARK PLUG LONGEVITY - Extends spark plug life, reducing maintenance frequency and costs.
TRUSTED MARINE GRADE - Used by pros, with a 4.8-star rating from 784 reviews—quality you can rely on.
FUEL SYSTEM REVITALIZER - Treats up to 60 gallons for a deep clean that keeps your engine running smoother, longer.

Mercury Marine Quickleen Engine and Fuel System Cleaner is a professional-grade 12 fl oz treatment that cleans carbon deposits from critical engine parts, treats up to 60 gallons of fuel, prevents engine knocking and piston seize-up, and extends spark plug life. Highly rated by marine engineers, it ensures peak engine performance and longevity.

Specifications

ASIN	B003ZF1GJQ
Brand	MERCURY
Customer Reviews	4.8 4.8 out of 5 stars (784)
Date First Available	3 March 2020
Item Weight	322 g
Item model number	8M0047931
Manufacturer	Mercury Marine Mercruiser
Manufacturer Part Number	92-8M0047931
Model	Mercury
OEM Part Number	8M0047931
Product Dimensions	20.32 x 17.78 x 20.32 cm; 322 g

Reviews

B**.

Good product

2.08.2025

J**.

Honestly when you're doing marine engineering work this product is top notch. Exceeded expectations. I use this multiple times through out the year and I noticed a difference. Quality fuel system cleaner. Not cheap but works.

1.12.2025

M**K

Really good stuff. Notable performance improvement after using this

31.12.2025

R**R

Bought more than once. Cleared sputtering and hard to start engines on power generators and lawn mowers well. Highly recommend.

28.11.2025

R**S

easy to use , great product

11.11.2025

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8228 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

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Good experience, but the tracking updates could be better.

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