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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Brand	MERCURY
Thread Size	RM
Vehicle Service Type	Watercraft
Automotive Fit Type	Universal Fit
UPC	745061870192
OEM Part Number	8M0047931
Manufacturer	Mercury Marine Mercruiser
Model	Mercury
Item Weight	11.3 ounces
Product Dimensions	8 x 7 x 8 inches
Item model number	8M0047931
Is Discontinued By Manufacturer	No
Manufacturer Part Number	92-8M0047931

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

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