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

Product ID: 741657439

⚡Restores engine power & fuel economy

🔥Boosts octane by up to 30 points

🛡️Reduces knocking & pinging for engine protection

C$15137

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Description

🔥 Maximize your ride’s potential—because average just won’t do!

ENGINE GUARDIAN - Minimize damaging knocking and pinging to extend engine life.
EMISSION REDUCER - Cut down harmful emissions while pushing your engine harder.
STABILIZE PERFORM - Advanced fuel stabilizer formula keeps your engine running smooth and strong.
FUEL EFFICIENCY REVIVAL - Restore lost power and optimize fuel economy with every tank.
RACE READY OCTANE SURGE - Elevate your fuel’s octane rating by up to 30 points for peak performance.

Royal Purple Max Boost is a high-performance octane booster and fuel stabilizer that raises gasoline octane by up to 30 points, reduces engine knocking, restores power and fuel economy, and lowers emissions—perfect for racing enthusiasts and anyone demanding peak engine performance.

Specifications

ASIN	B072K4S96B
Best Sellers Rank	#79,421 in Automotive ( See Top 100 in Automotive ) #313 in Oil & Fluid Additives
Brand	Royal Purple
Customer Reviews	4.8 4.8 out of 5 stars (250)
Date First Available	24 June 2025
Item Weight	2.29 Kilograms
Item model number	11757
Manufacturer	Royal Purple
Manufacturer Part Number	11757
Model	11757
Product Dimensions	23.37 x 18.03 x 16.51 cm; 2.29 kg

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C$15137

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered 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 Nicaragua.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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