Klotz Octane Booster & Gas Stabilizer - 1gal

Klotz octane booster and gas stabilizer for V-twin motorcycles, formulated to increase pump gasoline octane by up to 10 numbers while stabilizing fuel for storage. Trusted by Harley-Davidson and Indian Motorcycle riders for both performance and fuel preservation.

Features

• Increases pump octane up to 10 numbers
• Works with gasoline and ethanol-enriched fuels
• Tetraethyl lead substitute for added engine lubricity
• Stabilizes flame front and controls burn speed
• Cleans injectors, carburetors, and catalytic converters
• O2 sensor and converter safe
• No MTBE
• Absorbs moisture to prevent varnish buildup

Specifications

• Brand: Klotz
• Manufacturer Part #: KL-628
• UPC: 028175016282
• Size: 1 gallon
• Weight: 8.68 lbs
• Dimensions: 11 in L × 4 in W × 7 in H

Fitment

Suitable for all V-twin motorcycles including Harley-Davidson and Indian Motorcycle models running on gasoline or ethanol-blended fuel.

Frequently Asked Questions

Will this damage my O2 sensor or catalytic converter?

No — Klotz formulates this booster to be O2 sensor and catalytic converter safe, with no MTBE.

Can I use this in fuel with ethanol?

Yes — this product is recommended for both straight gasoline and ethanol-enriched fuels.

How much do I add per tank?

Follow the label dosage instructions based on your fuel tank capacity for optimal octane boost and stabilization.

Does this help with fuel storage?

Yes — the stabilizer absorbs moisture and prevents varnish buildup during winter storage or extended periods of non-use.

What does the tetraethyl lead substitute do?

It provides additional upper-cylinder lubricity and helps stabilize the flame front for smoother, more controlled combustion.