How many gallons does it treat?

The front of the container states "Treats up to 21 gallons" -- my husband uses this product in our 1965 Mustang, which has a tank size of 16 gallons. Depending on how often he drives the car and fills the gas tank, he uses 1 bottle with each fill up. I hope this answers some of your question.

does this work on a 2 stroke?

Does your 2 stroke recommend a higher octane - 89+ and you can't get the fuel? if so, use it

Is this safe for use with catalytic converters?

I am using it in a 66 Mustang and a 73 Z28 neither have converters, so not sure

Will this stuff boost 93 octane to 95?

Yes, I think it is a gain of just under 2.5 octane numbers when added to 12 or 14 gallons.

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🚗 Elevate Your Drive with STP's Octane Booster!

KNOCK NO MORE - Say goodbye to engine knocking and pinging for a smoother drive.
UNLEASH YOUR RIDE - Transform your vehicle's performance with a powerful octane boost!
COMPACT POWERHOUSE - Lightweight design (155g) for easy handling and storage.
PERFORMANCE RESTORED - Revitalize your engine's horsepower and efficiency effortlessly.
PRECISION ENGINEERING - Designed by STP, a trusted name in automotive care.

The STP Octane Booster is a high-performance additive designed to enhance your vehicle's octane levels, reduce engine knocking, and restore horsepower. With a compact size of 155 ML, it’s easy to use and perfect for any car enthusiast looking to optimize their engine's performance.

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Manufacturer	STP
Brand	STP
Model	Octane Booster
Product Dimensions	3.81 x 5.84 x 20.32 cm; 155 g
Item model number	78574
Manufacturer Part Number	78574
Position	Outside
Voltage	12 Volts
Item Weight	155 g

Stp Octane Booster Restore Horsepower, Boosts (155 ML)

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