Can i mix fuel cleaner and octane boost? Or will it damage anything?

Octane boost has small amount of fuel cleaner in it. Use 1st, wait at least 60-90 before adding the other. Pending miles on vehicle, driving habits, along with realistic expectations/results with using product(s); may be 💰👌 or 💸💸💸💸.

Why does it say "for off road use only" on the back under directions ?

2 reasons. 1 so the goverment doesnt pull your car into a smog testing area and you fail the test. 2 so you dont blaim it on k&n when you fail said test.

How much does it increase the octane?

Talking to a mechanic, he said that most gasoline octane boost additives (unless specifically stated) increase the octane rating somewhere between 3 or 4 points.

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K&N Performance+ Octane Booster: Boosts Octane and Improves Engine Performance, 16 Ounce Bottle Treats up to 18 Gallons, 99-2020

Product ID: 431989466

Details

Brand
K&N
Item Weight
15.2 ounces
Manufacturer
K&N Inc.
Number of Items
1
Specific Uses For Product
Bottle

⚡Boosts engine power

⛽Treats up to 18 gallons

🧼Cleans fuel injectors

€ 34.55

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Description

⚡ Power up your drive, fuel your edge!

FULL TANK TREATMENT - One 16oz bottle treats up to 18 gallons, perfect for your next fill.
ENGINEERED FOR SAFETY - Safe on catalytic converters and oxygen sensors—performance without compromise.
SMOOTH KNOCK FREE RIDE - Increases octane to reduce engine knocks, pings, and hesitation.
UNLEASH PEAK PERFORMANCE - Boost your engine’s power and responsiveness with every fill-up.
CRYSTAL CLEAR FUEL SYSTEM - Specially formulated to clean fuel injectors and optimize fuel flow.

K&N Performance+ Octane Booster is a premium 16oz additive designed to enhance engine power by increasing octane levels and reducing engine knock. It cleans fuel injectors, ensuring smoother performance, and is safe for catalytic converters and oxygen sensors. One bottle treats up to 18 gallons of gasoline, making it an essential upgrade for drivers seeking reliable, high-performance fuel efficiency.

Specifications

ASIN	B09Y2CLZK7
Best Sellers Rank	#36,785 in Automotive ( See Top 100 in Automotive ) #10 in Octane Boosters
Brand Name	K&N
Customer Reviews	4.6 4.6 out of 5 stars (667)
Included Components	Cleaner
Item Type Name	Octane Booster, 16oz
Item Weight	15.2 ounces
Manufacturer	K&N Engineering, Inc.
Model Number	99-2020
Number of Items	1
Part Number	99-2020
Size	16 oz
Specific Uses For Product	Bottle
UPC	024844387257
Warranty Description	3 Months

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TrustScore 4.5 | 7,300+ reviews

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€ 34.55

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered 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 Austria.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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