my tank holds 33 gallons, would i have to fill it up only will 20 gallons after i pour in Max Clean or could i fill right up?

Put in a bottle & fill your tank 3/4 of the way up. That way you get the improved performance, but only have to buy one bottle. That's what I do as I have a 26 gallon tank.

How to use this ? Can I just put this to the fuel tank ?

Dump it in the fuel tank and fill it up with gas. This large can will treat up to 20 Gallons. I use it in my motorcycle, so I just put a small amount in. It also has a fuel stabilizer in it which is good cause I don't ride the bike that often.

Does this work in small gas engines?

What do u mean by small gas engines? Im running a 1500cc engine and works well with it. Is this small enough?

Does MaxClean come with the application funnel for capless fuel tanks like some of their other products?

It does come with a plastic funnel that attaches to the bottle. Depends what fuel your vehicle takes if it will work or not if it's a caplesss filler neck vehicle tho.

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Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce

Product ID: 1290602

Details

Brand
Royal Purple
Contains Liquid Contents
Yes
Item Weight
1.3 Pounds
Number of Items
1
Unit Count
1.0 Count

⛽3.2% avg fuel economy boost

🌿Up to 18% emission reduction

🔥2.6% avg horsepower gain

⚙️3-in-1 fuel additive tech

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€ 29.92

Duties & taxes included

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Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⛽ Clean Fuel, Clear Advantage: Drive smarter, perform stronger!

BOOST YOUR MPG - Experience an average 3.2% fuel economy increase—save more on every mile
ECO FRIENDLY DRIVE - Cut harmful emissions by up to 18% and drive cleaner with confidence
TRIPLE ACTION FUEL POWER - Cleans injectors, valves & chambers for peak engine health
UNLEASH HIDDEN HORSEPOWER - Gain an average 2.6% more horsepower and feel the difference
UNIVERSAL ENGINE COMPATIBILITY - Works seamlessly with gasoline, diesel, ethanol blends & biofuels

Royal Purple Max-Clean is a premium 3-in-1 fuel system cleaner and stabilizer designed to restore engine performance by removing deposits from injectors, carburetors, intake valves, and combustion chambers. It improves fuel economy by 3.2%, increases horsepower by 2.6%, and reduces emissions significantly, all while being EPA and CARB compliant and compatible with gasoline, diesel, and biofuel engines.

Specifications

ASIN	B00B1VBQRS
Best Sellers Rank	#700 in Automotive ( See Top 100 in Automotive ) #5 in Fuel System Cleaners
Brand Name	Royal Purple
Contains Liquid Contents?	Yes
Customer Reviews	4.7 4.7 out of 5 stars (3,131)
Global Trade Identification Number	00641330117220
Included Components	Per Item Description
Item Type Name	Fuel System Cleand and Stabilizer
Item Weight	1.3 Pounds
Manufacturer	Royal Purple
Model Number	11722
Number of Items	1
Part Interchange Info	11722
Part Number	11722
Size	1 Count (Pack of 1)
UPC	641330117220
Unit Count	1.0 Count
Warranty Description	30 Days

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