I have 90 in my area will I need a full bottle to make 93 or half with 18gallon tank?

one bottle treat will 18 gallons or if you want to be precise one ounce per gallon of unleaded fuel. I use this in my Shelby SC Cobra 427. If you are just trying to bump up the rating I would find 93 fuel as it can get expensive to use at each fill up. I run only 93 NON ethanol gas and use it at each tank refill but then my car is primarily a show car. Hope this helps.

Is there a mixing chart for this stuff? Does more product mean higher octane numbers?

I don't know of a mixing chart and the octane level would have to increase more product. If I were you I'd contact Royal Purple. I'm sure they could answer your questions.

Can I mix this with 93 octane pump gas?

My 92 Volvo requires 93 octane. I got water in high test so decided to use regular gas and add booster. Very happy with the result as plenty of power.

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⚡ Unleash Peak Power & Precision – Because Your Engine Deserves the Royal Treatment

FUEL ECONOMY REVIVAL - Restore lost fuel efficiency and get more miles per gallon—because every drop counts.
KNOCK FREE CONFIDENCE - Say goodbye to engine knocking and pinging, ensuring smoother, safer rides under pressure.
RACE READY OCTANE SURGE - Elevate your engine’s performance with up to 30 octane points boost—feel the power difference every drive.
ULTIMATE FUEL STABILIZER - Stabilizes fuel for consistent performance, perfect for high-demand racing and daily driving alike.
PRECISION ENGINE PROTECTION - Formulated with MMT to prevent pre-ignition and engine damage, keeping your ride race-ready.

Royal Purple Max Boost Octane Booster is a high-performance fuel additive designed to raise octane levels by up to 30 points, reduce engine knocking, and restore fuel economy. Formulated with MMT, it stabilizes fuel and protects engines from pre-ignition damage, making it ideal for racing and high-performance vehicles seeking enhanced power and efficiency.

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The product exactly matches the description. Very satisfied with my purchase.

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The product quality is outstanding. Exactly what I needed for my work.

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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

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Manufacturer	Royal Purple
Brand	Royal Purple
Model	11757
Product Dimensions	23.37 x 18.03 x 16.51 cm; 2.29 kg
Item model number	11757
Item Dimensions L x W x H	23.4 x 18 x 16.5 cm
Item Weight	2.29 Kilograms

Royal Purple 11757 Max Boost Octane Boost Case, 16 fl oz (6 Pack)

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