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 8M0047931 Quickleen Engine & Fuel System Cleaner, 12 oz

Mercury 8M0047931 Quickleen Engine & Fuel System Cleaner, 12 oz

Product ID: 5311765

Details

Brand
MERCURY
Number of Items
1
Number of Packs
1
Thread Size
RM
Vehicle Service Type
Watercraft

⛽1 oz treats 5 gallons of gasoline

⚙️Removes carbon deposits from key engine parts

🛡️Prevents engine knocking & piston seize-up

NT$1609

Duties & taxes included

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Description

⚡ Power up your engine’s performance and leave carbon woes behind!

DEEP CLEAN POWER - Eradicates carbon buildup on carburetors, injectors, valves, spark plugs & more for peak engine efficiency.
OEM GRADE ASSURANCE - Crafted by Mercury Marine to meet stringent original equipment specs—trusted by pros, loved by enthusiasts.
ENGINE LONGEVITY GUARD - Prevents damaging engine knocking and piston seize-up, extending your engine’s lifespan.
FUEL EFFICIENCY BOOSTER - Just 1 oz revitalizes 5 gallons of fuel, optimizing combustion and saving you money at the pump.
SEASON LONG RELIABILITY - Use throughout the season to maintain smooth performance and avoid costly repairs.

Mercury 8M0047931 Quickleen Engine & Fuel System Cleaner is a professional-grade additive that removes stubborn carbon deposits from critical engine components, prevents knocking and piston damage, and enhances fuel efficiency. Safe for all 2-stroke and 4-stroke gasoline engines, it treats 5 gallons of fuel per ounce and is engineered to OEM standards by Mercury Marine, ensuring reliable, season-long engine protection.

Specifications

ASIN	B003ZF1GJQ
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#16,437 in Automotive ( See Top 100 in Automotive ) #37 in Fuel System Cleaners
Brand Name	MERCURY
Compatible with Vehicle Type	Watercraft
Customer Reviews	4.8 4.8 out of 5 stars (843)
Included Components	1 Bottle
Manufacturer	Mercury Marine Mercruiser
Manufacturer Part Number	8M0047931
Manufacturer Warranty Description	1 Year
Model Number	8M0047931
Number of Items	1
Number of Packs	1
OEM Equivalent Part Number	8M0047931
Thread Size	RM
UPC	745061870192

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NT$1609

Duties & taxes included

In stock

Sold byAmazon TaiwanDelivered 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 Taiwan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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