Idemitsu Synthetic Blend Rotary Premix 1 Quart – Apex & Side Seal Protection, Injector Cleaning

Idemitsu Synthetic Blend Rotary Premix (1 Quart) is a fuel-added lubricant formulated to protect rotary engine apex and side seals while cleaning injectors and reducing friction.

Designed specifically for gasoline-powered rotary engines, this premix combines synthetic components with targeted additives to support sealing, reduce wear, and keep fuel passageways clear. It’s supplied in a convenient 1-quart bottle, ready to mix with fuel at the recommended ratio for regular maintenance or high-mileage service intervals. The formula aims to maintain engine responsiveness and extend component life when used as directed.

How does this premix help rotary engine sealing?

The blend delivers supplementary lubrication to apex and side seals, helping them maintain contact with the rotor housing and reducing the chance of leakage. Better sealing can improve compression consistency and can make engines run smoother between rebuilds.

• Targets apex and side seals with seal-conditioning additives
• Helps preserve sealing surfaces under thermal stress
• Reduces micro-wear that accelerates seal degradation

Will it keep injectors and ports cleaner?

The product includes detergents and solvent components that help dissolve deposits in fuel injectors and exhaust ports, lowering buildup that impairs spray patterns and flow. Cleaner fuel systems can support consistent combustion and throttle response.

• Dissolves light varnish and carbon residues
• Helps minimize clogging of injectors and port passages
• Promotes steadier fuel delivery and combustion

How does it reduce friction and wear?

The synthetic portion of the premix supplies boundary lubrication where metal or seal faces contact, which cuts friction and heat generation. By lowering friction, it helps limit abrasive wear and can contribute to more efficient operation.

• Provides boundary-film lubrication under high-stress conditions
• Helps reduce metal-to-seal friction that causes scoring
• Supports longevity of moving and sealing components

How should I use this premix in my rotary engine?

Follow the vehicle or engine maker’s guidance for fuel-additive ratios and service intervals; typical use involves mixing the premix into the fuel tank at the recommended concentration before driving. Avoid using it in diesel or non-gasoline engines, and store the bottle upright in a cool, dry place.

• Mix with gasoline only, per the manufacturer’s dilution ratio
• Add to the tank before refueling to ensure even distribution
• Use periodically for maintenance or during prolonged spirited driving

Who is this for? This 1-quart Idemitsu Synthetic Blend Rotary Premix is intended for owners and technicians of gasoline-powered rotary engines who want a targeted fuel-lubricant that supports seal condition, reduces friction, and helps keep injectors and ports cleaner between service intervals. It’s well suited to enthusiasts maintaining daily-driven rotaries, track-day users seeking protective additives, and shops performing routine engine upkeep.